Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2c7f3dd98eea0d…

MALICIOUS

PDF

66.0 KB Created: 2020-12-17 15:15:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3289482553ace18be71d908c1c0758f4 SHA-1: 9238072f24f320e11ba56d4c389a60dca3f9dc95 SHA-256: ae2c7f3dd98eea0dd4c832c450dad70f8a0f6d281debfd3023801f76fc87c94d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it is a link farm and has been flagged by ML classifiers and ClamAV as malicious phishing/trojan content. The embedded URL 'https://trafftec.ru/123?utm_term=lords+mobile+free+gems+no+verification' directly supports the lure of free in-game currency, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics point towards malicious intent.

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://trafftec.ru/123?utm_term=lords+mobile+free+gems+no+verification PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446646/normal_5fc4da757ecad.pdfIn PDF document text
    • https://mimevomakiket.weebly.com/uploads/1/3/4/6/134693464/6749814.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc12f71be9b6939510c9d41/t/5fcdce9533187724c4127a8c/1607323285849/65785591081.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc283fb2bbd74065810d034/t/5fcdd0fd5177ea328ce3a786/1607323902371/56643964542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ef3664-5f66-416c-8231-8dc7a81d4dee/49868398830.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc173ecdf132613bbc1a931/t/5fd1f54dc10336458b3ad48c/1607595342037/ship_driving_games_simulator_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4dc7ae9fc3622d53b5433/t/5fcc385deb18547f4b774129/1607219293728/fish_game_for_cats_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e22088c99b6d37b43119/t/5fcab47cf29eb94b23c474be/1607119997066/domino_dash_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcef95cc750a3b5a04de20/1606217621988/kul_tiran_engineering_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdf613169f3e188a7a5d55/t/5fcfbac4e86a3658b95be1f0/1607449285361/49799624685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32382b58-0b91-4c20-8c49-b48d64c42923/historia_de_una_escalera_buero_vallejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2bb7740-928d-4192-bef2-3618ca5c12ca/lesson_9.5_practice_b_geometry_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54079ea4a794d5661c0f1/t/5fd1d811ef89ac6683780a65/1607587858862/best_text_notification_sounds_for_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc102e7bda9c57a97beca32/t/5fc417cdf3de5e49b5e5007f/1606686670808/gonijujotafasofiva.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_off0000c3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F4 5480 bytes
SHA-256: e946c88868ae00babb112bc59775540f41144a244b5ed92144517ee088a17b7e
font_01_sfnt_off0000d68b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68B 10744 bytes
SHA-256: a73411a87825d897d7e93fe5b1d991d3a572b75496866c15f2255721626fc40f

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