Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc57957c29627066…

MALICIOUS

PDF

45.3 KB Created: 2020-07-29 05:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e98240be26a395b9b29d27df4e8d234 SHA-1: fff8bd35af669331c269d0f34bc4072dbb5d2aa5 SHA-256: dc57957c2962706663346616b986340a3edd41f5450d31b6688e2194cfe6c252
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 Shopify domains hosting other PDFs, a technique often used for SEO link farms. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the ultimate destination for malicious payloads. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of numerous external links indicates a social engineering attempt to direct users to malicious content.

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.com/pify?keyword=flipped+math+algebra+1+answer+key In PDF document text
    • http://files.boldedscience.com/uploads/1/3/0/8/130814534/wipufonadepifot.pdfIn PDF document text
    • http://files.3smallplatescatering.com/uploads/1/3/0/9/130969418/1887825.pdfIn PDF document text
    • http://files.wooddragonadvising.org/uploads/1/3/2/6/132681062/1373169.pdfIn PDF document text
    • http://files.theordernj.com/uploads/1/3/1/4/131454521/964805.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/1/0432/4173/4312/files/vipisajif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6620/files/nigetolopobofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/tediko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/52553211172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/duwesux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/64419304433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/23314726333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/wepuvegemetarebotav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/kigafoxavonosiwupegidogaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/bepubebewade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4388/1114/files/dimogasirive.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_off0000739d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739D 5456 bytes
SHA-256: 630ec8a4d7a7a85f986a0f76a516b6a28f5c34956caf2920b85e0df8061ed0db
font_01_sfnt_off0000860d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x860D 9928 bytes
SHA-256: 6afcc353ea99f7dc69daa1af744a9c81e847c736db9e16f9b524cb2bc3908504

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