Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fdc719a5a2ae9ef…

MALICIOUS

PDF

65.5 KB Created: 2021-03-24 07:16:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 30648f375574c100b80a70da5a42f5ad SHA-1: 9794c0778fd4a72690061301cd721698aac0f564 SHA-256: 7fdc719a5a2ae9ef7969b632adc8638083f824b78f1d810ea06e48f08ab15f09
186 Risk Score

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 0.9998

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://botokaw.ru/strik?utm_term=troy-bilt+tb240+parts+manual PDF link annotation
    • http://mixixokixa.22web.org/astral_projection_a_record_of_out_of_the_body_experiences.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/QQicibM/dungeon_keeper_mobile_guide.pdfIn PDF document text
    • https://jerepukiw.weebly.com/uploads/1/3/2/6/132681878/c60be891415b8.pdfIn PDF document text
    • http://vadosixajobirug.mygamesonline.org/25266505757.pdfIn PDF document text
    • https://cdn.sqhk.co/mepawoworu/ghq8CV3/sijinakareru.pdfIn PDF document text
    • https://bupedokan.weebly.com/uploads/1/3/1/6/131607930/6725722.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/wfighh0/80446683979.pdfIn PDF document text
    • https://cdn.sqhk.co/luwagoma/Gjgfhhv/thyroid_nodule_management_guidelines.pdfIn PDF document text
    • http://gowanenutik.mypressonline.com/vagegaguruduwaxuzekexik.pdfIn PDF document text
    • https://cdn.sqhk.co/bikuloxisage/emhhjcn/unchained_melody_sheet_music_with_lyrics.pdfIn PDF document text
    • https://pakimisubimoge.weebly.com/uploads/1/3/0/7/130776027/gipoba_mobosiv_matuwimare_tijomesogumoxiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://togilolus.epizy.com/how_to_install_printhead_on_hp_officejet_pro_8620.pdfIn PDF document text
    • http://lapodalojowev.rf.gd/bridge_to_terabithia_test.pdfIn PDF document text
    • http://nulesuli.epizy.com/hello_assalamu_alaikum_baby_ringtone_free.pdfIn PDF document text
    • http://vaxalisuj.rf.gd/declaracion_de_alma_ata_1978.pdfIn PDF document text
    • http://begosene.epizy.com/relusosotutazogonudeket.pdfIn PDF document text
    • http://zaxowudupa.rf.gd/41939627621.pdfIn PDF document text
    • http://fijosat.epizy.com/88353179269.pdfIn PDF document text
    • http://malinaliwul.epizy.com/nujipifukapujikex.pdfIn PDF document text
    • http://malejubu.myartsonline.com/calendar_planner_2020_malaysia.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DB 5552 bytes
SHA-256: 514334008808d846e946c69d375f5d88d4a70f4170d383fc92f110f3686d2fad
font_01_sfnt_off0000d5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AE 10268 bytes
SHA-256: 4f3aaf43aa80fee2758aa8a1f1f1f6b6cb284d6f85b7401494812e4d16462792

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