Malicious PDF — malware analysis report

Static analysis result for SHA-256 002bb53417dc5f05…

MALICIOUS

PDF

33.4 KB Created: 2020-08-24 20:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 770c678832ad830f0c852a1d6a13d110 SHA-1: 91713259510048bfeabde6ed734ff3f3d8d14d64 SHA-256: 002bb53417dc5f051f25fb3d6f6cdde2e6dbd23d1566506fe73ad2d01bfb5c14
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF document contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=new+heinemann+maths+5+answers', which is also flagged by a critical heuristic. This suggests the primary purpose is to lure users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/pify?keyword=new+heinemann+maths+5+answers
    • http://files.happy-wife-spirit-life.com/uploads/1/3/1/4/131437669/2741350.pdf
    • http://files.thoughtfullyseeking.com/uploads/1/3/0/7/130775970/mowexe_mabutejupe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/sonda_vesical_tecnica.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/agarose_gel_preparation.pdf
    • https://cdn.shopify.com/s/files/1/0437/9354/7424/files/property_casualty_exam_secrets_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/5842/1142/files/risk_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/exercicios_analise_combinatoria_concursos.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7251/files/bangor_revision_guide_gcse_physics.pdf
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/23114999164.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/pokemon_mystery_dungeon_gates_to_infinity_rom.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2931/files/32714167569.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/veterinary_microbiology_and_microbial_disease_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004591.bin
b2b7482f05942b454570293e59cfef80f2ba7e941a48bce0b7a0c28246d1f976
pdf-font-stream PDF embedded font (sfnt) at offset 0x4591 5076 bytes
font_01_sfnt_off000056b9.bin
77a54dc344330ec079c3c0b16976dc687b2aabe1cf3e91b236348a0261ab6b3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x56B9 10080 bytes