Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95f85307196b6ac…

MALICIOUS

PDF

65.3 KB Created: 2020-12-13 22:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 097d30bbb40aeed7d7eb2625fc2d0cfe SHA-1: dd46953e8f349309f1d06c0c4e7448f9a47d2460 SHA-256: b95f85307196b6ac68fc4249b6d00d089367a47d7055c84324c89af82987a256
156 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 0.9998

Heuristics 5

  • 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.
  • 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://traffking.ru/strik?utm_term=my+cafe+recipes+%2526+stories+cheats+apk PDF link annotation
    • https://wevuviwujito.weebly.com/uploads/1/3/1/6/131636984/c22cb388453e95.pdfIn PDF document text
    • https://jezitazosebizag.weebly.com/uploads/1/3/4/7/134700096/2796375.pdfIn PDF document text
    • https://malinozibide.weebly.com/uploads/1/3/4/3/134380659/1655450.pdfIn PDF document text
    • https://sutogibigasoju.weebly.com/uploads/1/3/1/0/131070189/tikotiwevotozar_najureliji_bilegur_tokawipaki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467274/normal_5fcb779b149da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f9d0ed9b-ea1c-4f47-b1f0-17960135591c/texivisomu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56dc1f7cf8c75404937d5/t/5fca3cbb2f5dbb44b7873ad7/1607089339375/mujedesuvevukimatovof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ac8a2a-96bd-42bd-88b5-1a1c04b9ae8b/musolusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/629f49d2-ae7d-4731-a66f-815af4201351/97094765592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73f95afb-83c5-44de-8d46-8254527e79ba/professor_layton_vs._phoenix_wright_ace_attorney_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce3097b9ec03672fa8341e/t/5fd0c0cf6cbf29106b041855/1607516367721/cricket_wireless_login_problem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/965642a3-6620-4bd9-b184-540a7ccdeb0f/wuzoletefowuxisonab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a9240a-f99f-4fef-8573-b59ffcbbfd90/chapter_15_water_and_aqueous_systems_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a74c68f7-3af3-4b00-922f-88699664341e/mint_indian_cuisine_gainesville_fl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a779a3d-a40c-4b48-b393-bb74ba65e030/piano_notes_chart_88_keys.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB945 4576 bytes
SHA-256: b71f84f41da9370196a9be1b2fe93f4fbe1fa0529d863c7df8419660c2351488
font_01_sfnt_off0000c8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E2 9900 bytes
SHA-256: d72be6a67d4285da926c7289e8ddcd9a5c426ccc4374b0b6a0f267ec0523fd4e
font_02_sfnt_off0000ea44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA44 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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