Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcbb30d6ea221a9…

MALICIOUS

PDF

41.9 KB Created: 2020-08-17 09:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 725fcb7cc6ac9daa6358a524fbab03bd SHA-1: 7ad3946ee6a86907b8486eba89aa3cec2c738b1c SHA-256: 1dcbb30d6ea221a9c0adba45fe949b8cdbe03f9901a12ab79e3abbaffb225467
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, many of which point to external PDFs hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=conversions+length+worksheet', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure through a link farm, likely for phishing or malware distribution.

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=conversions+length+worksheet In PDF document text
    • http://files.inspireauthenticity.net/uploads/1/3/1/0/131070895/givivova-wizetiri-kavegotak-larubafoju.pdfIn PDF document text
    • http://files.amandapoulson.net/uploads/1/3/2/7/132740536/kuwugos_lugaxazida.pdfIn PDF document text
    • http://files.lotteryindustryhalloffame.com/uploads/1/3/2/7/132740845/98afd7.pdfIn PDF document text
    • http://files.eamtradio.com/uploads/1/3/0/7/130739155/lipeb.pdfIn PDF document text
    • http://files.wintergreenmapleproducts.com/uploads/1/3/1/6/131606431/d9cccae083c05.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/1/0431/7259/3820/files/mufuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/kikujufeluwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mipin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/39444653218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/6511252076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7251/0362/files/pokiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8960/7321/files/gomepepono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/super_sport_10_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4849/3475/files/baldur_s_gate_sorcerer.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 5

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_off000066e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E0 4856 bytes
SHA-256: 86537ce5e84698f29a0f151c6f77c2dfdfd99dbe75325f7a3b9eb1b0585f5b66
font_01_sfnt_off00007775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7775 10364 bytes
SHA-256: 274249b2cf1a0225ec6d2a2deaaafba9f9a8a1abd5402171213cad9517ae04d5

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