Malicious PDF — malware analysis report

Static analysis result for SHA-256 190d317e3f0cf28b…

MALICIOUS

PDF

66.3 KB Created: 2020-12-29 12:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8ee6101b8cb3c221ba83c384bd721bcb SHA-1: 13172ec82de461dc14b8258fac16ce1a2e5f6e98 SHA-256: 190d317e3f0cf28b3ae99a4964b919fe226a24687f4d3fd4adfe83d106e30680
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, detected as a 'PDF_SEO_LINK_FARM', suggesting a malicious intent to redirect users. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically flagging it as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, appears to be a lure related to 'board games pros and cons', which is then used to host a large number of external links.

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://trafffi.ru/strik?utm_term=board+games+pros+and+cons PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422638/normal_5fcb5e3e83223.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368474/normal_5fe2cfc328a9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413986/normal_5fabca2355501.pdfIn PDF document text
    • https://roluliduz.weebly.com/uploads/1/3/4/7/134771057/womagosojuka-soside-pikunalokepop.pdfIn PDF document text
    • https://cdn.sqhk.co/wozepefiga/3hg6uzG/asteroid_headed_for_earth_nasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419211/normal_5fbe056e711d1.pdfIn PDF document text
    • https://jepirozo.weebly.com/uploads/1/3/4/4/134474462/877972.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/28edc6e2-c177-4a5d-ae78-d7aacb4ed1f9/samuel_l_jackson_jurassic_park_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22c769fe-5ddb-4fcb-b0ac-f4a2b83c5b33/80783286850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb20e5a4-025f-47d6-9837-4cff3dc1d22f/43279522687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1ae5f77-a7c2-4940-9719-6ed51f413fb9/jack_jack_plays_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fcaa86c-94ad-4f17-ab6c-16ee760db7f1/64231630328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/009b0bad-1da5-4b4d-8836-f38e409ea95d/28223749993.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/english_songs_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f14ea977-8daf-491c-a8ff-a02012620070/xoxavijolam.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/factory_physics_3rd_edition.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC747 5412 bytes
SHA-256: cd7405f5e66767f70423826d138a84d4866cda871ad9a1221bc7ba75df1759dc
font_01_sfnt_off0000d99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99B 10336 bytes
SHA-256: af635fcfe1f70842090fcf88a180e7373458ea56609e8f1323b5363f6af57e6d

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