Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b2982a48f70f4db…

MALICIOUS

PDF

88.1 KB Created: 2021-03-30 17:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6d1b0bd1b451a529bff77cb3c1fe9823 SHA-1: 16f15cb533c8d9f1542aa813711bc0016e152f42 SHA-256: 7b2982a48f70f4dba25e695fd546f1f43a2d20e73efcebacb642aca6af39e577
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://midufefew.ru/strik?utm_term=can%2527t+stop+won%2527t+stop+meme PDF link annotation
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/witogubuduv.pdfIn PDF document text
    • https://gexaxiwiwa.weebly.com/uploads/1/3/4/4/134480231/xumufatutigubejof.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/80eb0.pdfIn PDF document text
    • https://govexofube.weebly.com/uploads/1/3/1/8/131872198/pudusavexadeperon.pdfIn PDF document text
    • http://femusawar.iblogger.org/augmented_reality_android_apps.pdfIn PDF document text
    • https://wusitezuredov.weebly.com/uploads/1/3/5/3/135314125/1494762.pdfIn PDF document text
    • https://fifeguku.weebly.com/uploads/1/3/4/7/134733895/f41a6d74e25b03e.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/998a1.pdfIn PDF document text
    • https://tetobalowuw.weebly.com/uploads/1/3/4/5/134523757/2e7f9c5.pdfIn PDF document text
    • https://mopuxemunokele.weebly.com/uploads/1/3/5/3/135318458/wepin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/31a26e9a-fd1f-4772-8593-d2a8630e3da8/febixamisepogilege.pdfIn PDF document text
    • https://c4a5d104-04f9-44e6-b03f-1f5edac3680f.filesusr.com/ugd/f23921_f0f6d262e60d48fb93917052cc9e5b77.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/10fd7f2a-c39c-42b7-ab56-dc133e01aa96/live_life_before_life_leaves_you_meaning_in_marathi.pdfIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_7824d31b15e846a68ed59f964f5a53fb.pdf?index=trueIn PDF document text
    • https://6ba7316d-b84b-4ccb-a32a-103c856d4013.filesusr.com/ugd/91f37e_1efa55cf3b984d679e59127092834c19.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/95af1a18-499b-4190-aadb-5a24cdee9693/ff7_remake_walkthrough_shinra_building.pdfIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_80c44313380e4a96aea9339de10e0454.pdf?index=trueIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_bcf0560beb76488789e6df6cb2ae6d55.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/431e8b0f-bc7a-4efe-92d2-df25c799dffe/how_to_build_a_nonprofit_budget.pdfIn PDF document text
    • https://a7474f5d-6ec7-41e4-954d-8cb0a6a0c5ec.filesusr.com/ugd/b987d2_dfd6bdad645040148dca4f51b659518d.pdf?index=trueIn PDF document text
    • https://7c5e2310-e79b-429e-9f4a-70471a43dcce.filesusr.com/ugd/8ec1ef_dfc0b7ae24cb49c489e43f76dddba1f1.pdf?index=trueIn PDF document text
    • https://781b76d0-895c-4d4e-90f3-491762fad171.filesusr.com/ugd/894952_4236c65db584434abefeba9726010f83.pdf?index=trueIn PDF document text
    • https://a80c0318-1640-4d50-a016-df037fc402b9.filesusr.com/ugd/895bef_53da45e1a239409896b30495e1822a10.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/828e7103-5c28-4d75-ba12-7ca968b25c0a/chords_for_have_yourself_a_merry_little_christmas_piano.pdfIn PDF document text
    • http://disupenepoka.epizy.com/film_malicious_1973_sub_indo.pdfIn PDF document text
    • http://pibonev.rf.gd/vibration_analysis_report.pdfIn PDF document text
    • https://61069a5e-3c5f-4884-a3c7-8c7552058b74.filesusr.com/ugd/0789d5_0cb23d28da474823b188d1bb12566c2c.pdf?index=trueIn PDF document text
    • http://dinexun.epizy.com/vexod.pdfIn PDF document text
    • http://notadagas.rf.gd/certyfikat_kompetencji_zawodowych_ksika_2020.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AE 4868 bytes
SHA-256: a12357a14f52236381777a3c1b0ec22fe3f5fd99180f1862681a266c79bb05ee
font_01_sfnt_off00011541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11541 11956 bytes
SHA-256: 67728ff98f91aa00d8e9074e5a2b571b0ea2c11b49252498d4cd36612b2b4527
font_02_sfnt_off00013d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D59 16080 bytes
SHA-256: bf2bb651642035a19e1b8bf5dc55c4db7948913289cd11d1f66f0c65c0fed8c7

Open this report in the interactive analyzer, or submit your own file for analysis.