Malicious PDF — malware analysis report

Static analysis result for SHA-256 5868d2b3c70a1f63…

MALICIOUS

PDF

52.5 KB Created: 2020-10-05 21:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c56418d60019dc1468f0122141f73673 SHA-1: 64989d4c2d6c69cfc4be6b100b8e0e26cdc04eae SHA-256: 5868d2b3c70a1f6397282565045f4eacd39e5ca3bd79b510b43b7157a0be7181
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with a critical heuristic identifying a redirector link to 'https://ttraff.cc/pify?keyword=devops+handbook+pdf+espa%25C3%25B1ol'. This indicates a phishing or scam attempt, likely using the 'Devops handbook pdf espa nol' lure to entice users to click malicious URLs. The ML classifier strongly supports the malicious verdict.

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=devops+handbook+pdf+espa%25C3%25B1ol In PDF document text
    • http://files.marff.com/uploads/1/3/2/8/132814301/efd66c8a46f4b4a.pdfIn PDF document text
    • http://files.rrfarmlivestock.com/uploads/1/3/2/6/132696201/viterazoliwe.pdfIn PDF document text
    • http://fezezogim.cambridgesupervisiontraining.org/uploads/1/3/2/6/132681337/divef.pdfIn PDF document text
    • http://files.mogosoapemporium.com/uploads/1/3/1/4/131409135/7200689.pdfIn PDF document text
    • http://xozida.paulcyon.me/uploads/1/3/0/8/130814575/a9a6a7ce86.pdfIn PDF document text
    • http://files.liveactionguideservice.com/uploads/1/3/2/6/132695489/32557f.pdfIn PDF document text
    • http://files.ceasefirebusinessassociates.com/uploads/1/3/1/3/131380171/dafusafukifepalitu.pdfIn PDF document text
    • http://files.straymongrel.com/uploads/1/3/1/8/131871894/4cc60b638a0f8e.pdfIn PDF document text
    • http://wesib.isaiah556lawncare.com/uploads/1/3/0/9/130969937/zezozulovuwupawi.pdfIn PDF document text
    • http://dufes.ennoblesolutions.com/uploads/1/3/0/7/130739140/e04e5f4ef5c.pdfIn PDF document text
    • http://files.earthsideholistic.com/uploads/1/3/1/4/131454126/5168046fc97aba.pdfIn PDF document text
    • http://rokav.wildwiscwinterweb.com/uploads/1/3/0/8/130874431/nobufe.pdfIn PDF document text
    • http://files.stormravenapothecary.com/uploads/1/3/2/7/132712000/moguja-fezopaxi-fisuzebovipuf-dolum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8162/1664/files/oskar_blues_dale_pale_ale_calories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/pujovivaxafafuron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5190/4924/files/tajoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7816/4387/files/motels_suddenly_last_summer_meaning.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_off00008d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2A 5508 bytes
SHA-256: 27ce87d10eff37ad6e15b06a34a8dd96daec011b63491217b610f1add6c71842
font_01_sfnt_off00009faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAF 10356 bytes
SHA-256: 01e765af7365d9e006656ac28103e80b3a48b128daa3b30d77c29c66049cf42a

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