Malicious PDF — malware analysis report

Static analysis result for SHA-256 c35c779ccafbe69c…

MALICIOUS

PDF

41.6 KB Created: 2020-08-09 00:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d97a79fb2f6ac5f0252f2c396d3c25f9 SHA-1: 7cced7d75a6162b0b478c2da475d8e8bd6188128 SHA-256: c35c779ccafbe69c67e32167ef4fb4513d92f073ac78143939dd8c0b724bb64c
254 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body also explicitly requests sensitive recovery information, a common social engineering tactic. The presence of a malicious redirector and the lure for recovery secrets strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.com/pify?keyword=break+the+chain+of+infection+pdf In PDF document text
    • http://files.coffeebaseball.com/uploads/1/3/0/9/130969598/2882199.pdfIn PDF document text
    • http://files.tilttrucksaccessories.com/uploads/1/3/0/7/130739783/8523554.pdfIn PDF document text
    • http://files.atylerholmanproject.com/uploads/1/3/1/4/131452958/watamopijatuxipin.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/1/0429/6772/8279/files/wunepajifukogoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/54954124591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1615/files/8th_grade_vocabulary_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/10_medicinal_plants_and_their_uses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6808/7701/files/aprender_aleman_7_dias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5696/2467/files/games_like_ourworld.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4782/1212/files/luvituzonodadobisonuboke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/27765440668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2092/files/scotts_rotary_spreader.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 2

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_off0000668c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668C 5148 bytes
SHA-256: e5b3526d99aff9d11f07dce153c09be4ce6c36c584e7e1f3bb4d66b8136809e3
font_01_sfnt_off00007810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7810 9964 bytes
SHA-256: d99cbaeb0ef087f5faa572476028f83271d6073deddce02926c250614ee496e4

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