Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5151229b71f0c94…

MALICIOUS

PDF

54.7 KB Created: 2020-08-21 10:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fac9313079f7a50f1f64ce1d7c975f28 SHA-1: b1f4f5553a710505849cc5c33e45cf9614cc1385 SHA-256: e5151229b71f0c948e0cb9e1eeb9a81f0c7d8df7b1e3da435d2d90c4e86a4715
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a "Bootstrap cheat sheet 3". The document also hosts a large number of other PDF files on Shopify domains, likely as part of a link farm to improve search engine ranking and distribute malicious content. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=bootstrap+cheat+sheet+3 In PDF document text
    • http://files.no-sewcrafts.com/uploads/1/3/2/6/132681308/1a037b0c58.pdfIn PDF document text
    • http://zunopat.jenniferborkowskidesigns.com/uploads/1/3/0/7/130775166/c18e5453.pdfIn PDF document text
    • http://files.stmartindp.com/uploads/1/3/1/4/131453871/8814061.pdfIn PDF document text
    • http://files.floatspa.rs/uploads/1/3/1/4/131482892/0934c73d42.pdfIn PDF document text
    • http://files.shardenfreude.com/uploads/1/3/1/3/131383493/xajiw_vogubukixug_riwojekezigek.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/1/0427/6404/2396/files/kogezesafejinikufap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/free_rp_codes_list_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0453/8528/files/resake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2656/0677/files/free_cello_sheet_music_pirates_caribbean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0970/9976/files/businessman_3_ringtone_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6834/8829/files/xenerowusujix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/kavosiwoxadixitoxar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2722/7036/files/70297327003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4505/1797/files/acidosis_tubular_renal_pediatria_diagnostico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/85251814311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/astm_a532_class_ii_type_b.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9366 5200 bytes
SHA-256: 1357295fd577d65b635c0400a956a3c85242b97fb026f6a78d0c61c72c45fc2d
font_01_sfnt_off0000a512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA512 12532 bytes
SHA-256: deefb798d1236a6f1160f92eba71285a4f04abcc4b9384748215fe459432e1db

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