Malicious PDF — malware analysis report

Static analysis result for SHA-256 c55e2a3eef27531f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-02 14:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7710533608cfbf7b424436475aabca30 SHA-1: 667eb9b1150393a545c2f719545238365dcea234 SHA-256: c55e2a3eef27531f8a19d427c5c2fee455f38458b0c9096f95eb385d18b25f47
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, with one URL pointing to known malicious redirector infrastructure. The document body is heavily obfuscated but contains the URL 'https://ttraff.ru/pify?keyword=sheep+head+minecraft'. The primary attack pattern involves luring users to malicious websites through these numerous links.

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.ru/pify?keyword=sheep+head+minecraft In PDF document text
    • http://files.comedykerfuffle.com/uploads/1/3/2/7/132740951/danagafovubo.pdfIn PDF document text
    • http://files.geoffleavenworth.com/uploads/1/3/2/7/132710628/1371689.pdfIn PDF document text
    • http://files.powdermonkeycayman.com/uploads/1/3/1/1/131164198/7033960.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://cdn.shopify.com/s/files/1/0427/4978/8327/files/40767252389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/xixekusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4008/6933/files/72247384654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/menupuvisapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/xuripenulowunavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/mowuputawajeterakurokew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/78900329870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30698029692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/40040193250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/29003051014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/20254182686.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4C 4964 bytes
SHA-256: f7229226fdba51988f2d3932f297cea1d9c73ed4aac42fd1192772f5dae7c4cd
font_01_sfnt_off00006efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFC 9620 bytes
SHA-256: 57228f4817440781444f0b567caa25eb5c80536d83317634010fbd56a9dd96f6
font_02_sfnt_off00008fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBD 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.