Malicious PDF — malware analysis report

Static analysis result for SHA-256 01744dcdbd89d102…

MALICIOUS

PDF

40.9 KB Created: 2020-08-03 06:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b20b650de70a74e332ee75b5f35607ba SHA-1: 97f59e8b2b08a2b7b7835784801fe7cb756660cc SHA-256: 01744dcdbd89d102be00bd5edf1071b71e0fdfb4c8f4fdbd8566d86ed8110b48
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. This indicates an attempt to obscure the final destination and potentially distribute malicious content or phish for credentials. The ML classifier also 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.ru/pify?keyword=here+there+be+monsters+skyrim In PDF document text
    • http://files.journeyhappyfit.com/uploads/1/3/2/3/132303374/binox-baxotibojara-resadidoxukep.pdfIn PDF document text
    • http://files.engstromgroup.com/uploads/1/3/1/4/131453267/tukewabulekufem.pdfIn PDF document text
    • http://files.mayumiworks.com/uploads/1/3/0/9/130969708/lewejijizuge-moguxaf-kupitofonuzale-sigonizusodasix.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/1/0430/6193/6282/files/nupapanotixazimidupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/vudowadomovusulimapelewow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9312/1442/files/3789457625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/jusuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/48313463279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7825/4753/files/64247147334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2399/6840/files/nekewudejegog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/dikulet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/51896059988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4912/2983/files/97859734917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/mobimulokaxusezozepavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4464/9630/files/26908210752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/40136683214.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 1

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_off00006207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 4948 bytes
SHA-256: 7746863801311fb8c8669003192c31a5cee202d13f8fabaa1a6cfff82bb9e419
font_01_sfnt_off000072b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B8 10128 bytes
SHA-256: af698b228f06b73dd67c02d7750fd8c9ee9d8a100815318bc165496ab51190f5

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