Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef4a06661aff92b…

MALICIOUS

PDF

63.9 KB Created: 2020-12-27 19:43:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c3d9892881210073e08a3ad681959453 SHA-1: 92d162537faceb3cc60d238dd00c1dc6f7c96025 SHA-256: 1ef4a06661aff92b3e2449cdeccf812105d3739e979a0e7be15183dbbfb1dbd1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file exhibits characteristics of a phishing or malware distribution lure, as indicated by the 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The document body, though truncated, suggests a lure related to the 'Madagascar' movie in Tamil, likely to entice users to click on embedded links. The presence of numerous external links, including one pointing to 'trafficel.ru', strongly suggests an attempt to redirect users to malicious content or download further payloads.

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://trafficel.ru/aws?utm_term=madagascar+movie++in+tamil PDF link annotation
    • https://cdn.sqhk.co/bixatavafut/jathh3S/tap_abbreviation_medical_term.pdfIn PDF document text
    • https://bepewosub.weebly.com/uploads/1/3/4/4/134445398/3836335.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500677/normal_5fac524fa20b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8730e7993ef.pdfIn PDF document text
    • https://cdn.sqhk.co/wiluxuko/hbgfowv/mugejuxoviraporemisipepo.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/6ogd0gg/ninja_fruit_cutting_game_free_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5fa4f82daea0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459621/normal_5fe7835673421.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457861/normal_5fe2c9f8890f8.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/a609ed48-db57-450a-906e-47863f2fc6c5/24874315931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988f59d3-151d-41ea-8f2a-899c977a2ff2/dbz_space_dokkan_battle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81357ba7-8a97-4296-80a2-3b54d542a01f/stafford_baseball_league_facebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/756e5a92-7eb5-437a-91c8-ca62f9722ad4/45051111969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873c046e-1689-4861-8d54-9960c4dbd043/pinball_games_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43127f38-2143-41be-975e-faafad835d9d/38811629801.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_off0000bf11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF11 5324 bytes
SHA-256: 19e4169247014ecbf660abb98bb9a6308d18463ad9e7065fe2112931958e3ab2
font_01_sfnt_off0000d12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12C 9892 bytes
SHA-256: 411ac795254bf6ba163b3815e0872954644cbc18557b1ca948deae9bb2c53291

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