Malicious PDF — malware analysis report

Static analysis result for SHA-256 0944cbe6c947979f…

MALICIOUS

PDF

45.5 KB Created: 2020-10-30 20:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bd57312cfc152624452f6909bf0a02cf SHA-1: 5875e3f65fd69ec6be8e0e9b61bff155aebcb7ac SHA-256: 0944cbe6c947979f5354f236a33edab03bdc4af189f1c0f31f934323a23cde1e
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirector infrastructure. The primary malicious URL identified is https://ggtraff.ru/aws?keyword=skyrim+finn%2527s+lute, which is flagged as a known malicious redirector. The document body itself contains obfuscated text and URLs, suggesting an attempt to lure users into clicking these links. No scripts were extracted, but the presence of numerous links indicates a phishing or redirection attempt.

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://ggtraff.ru/aws?keyword=skyrim+finn%2527s+lute In PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/3542251.pdfIn PDF document text
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/divanekurepevi-bibebakokokag-leraje-bulojitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369511/normal_5f8b74c901504.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/060ac3a9-03e2-4e46-af84-5b6302a07433/who_you_say_i_am_hillsong_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/nefrotoxicidad_por_anfotericina_b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616f566e-8f47-4d7f-87f6-a1904917a45f/51520077800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c5ed023-3154-46e2-8ea0-9a7ace71747a/70107400451.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/90410842470.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/nekitonimixa.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/molba_za_posao_medicinske_sestre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c1bb927-be45-4c25-a5f4-4b677ec08b26/fallout_4_carry_weight_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/66032034514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a9bb880-b0fa-4bd3-a940-e773d97583a7/lotajukalopoxedol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faa16857-0cb2-4032-8e9f-07eda29454e4/un_mensaje_de_otros_mundos.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/bacterial_transformation_method.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ea8cd94-5951-40b4-ae19-5c8bca55f3df/nixikaxiku.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/33026062256.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6690 4780 bytes
SHA-256: cd169fc3f3400bbb139a9b5a0c78471e02cf2002a4270abb115baec827513162
font_01_sfnt_off000076b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B8 10920 bytes
SHA-256: b969a4da2cf7dc82f141f8e5b2b5c94c71c1cff65f864558458561ede75df8b7
font_02_sfnt_off00009b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B51 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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