Malicious PDF — malware analysis report

Static analysis result for SHA-256 88945a13544822aa…

MALICIOUS

PDF

54.1 KB Created: 2020-08-10 17:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd8fa018c4b92172c036ac500bc4467f SHA-1: 75880a2f669e5f26baa5363729c42bf1c6c84542 SHA-256: 88945a13544822aa27431b0114c0086c13baf938220c4e1414e3301a3154cbe0
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically a URL related to a 'banting food list pdf' lure. It also exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains. The embedded URL 'https://ttraff.com/pify?keyword=banting+food+list+pdf' is the primary indicator of malicious intent, likely serving as a gateway to further malicious content or phishing pages.

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.com/pify?keyword=banting+food+list+pdf
    • http://files.guardiantraining.co.uk/uploads/1/3/1/4/131438180/nebikosoru_junelo_jonejizig.pdf
    • http://files.bellanoirclothing.com/uploads/1/3/1/8/131858916/1454211.pdf
    • http://files.octaskhoppers.com/uploads/1/3/1/6/131606502/9347302.pdf
    • http://files.madamedrydensgrade5class.com/uploads/1/3/2/7/132710797/monomiwisap-ravub-zosagezubepako-jurimowekol.pdf
    • http://files.morriswomansclub.org/uploads/1/3/1/6/131606366/gilabopuveloredi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/10809647467.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/bipekorarudetuxuvu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/87701713442.pdf
    • https://cdn.shopify.com/s/files/1/0430/5843/0106/files/71479227101.pdf
    • https://cdn.shopify.com/s/files/1/0439/1396/9819/files/unicode_character_symbols_emoticons.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/tukaxutubijakibavekoligej.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/riscos_ocupacionais_em_odontologia.pdf
    • https://cdn.shopify.com/s/files/1/0433/8748/6358/files/need_for_speed_prostreet_platforms.pdf
    • https://cdn.shopify.com/s/files/1/0436/1011/2163/files/miocardiopatia_hipertrofica_dilatada.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/application_for_citizenship_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0434/5836/3558/files/20102473099.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7795/files/29475019788.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_off0000959f.bin
f043781651e553615f0e3bc30fc3af67b5bf54b066422c27f848467af97c9875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x959F 5160 bytes
font_01_sfnt_off0000a743.bin
48e7eb276a5178a6b8a38b406fb1c1d86eda75e62c91e5ce10054d0f3fc05bc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA743 10608 bytes

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