Malicious PDF — malware analysis report

Static analysis result for SHA-256 574a953f06d19a3c…

MALICIOUS

PDF

44.4 KB Created: 2020-08-14 15:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5233c7ea6949c2d4e44336d2c96da965 SHA-1: 84e3e91f698a733f07fa5b7a3f06a33856abc19b SHA-256: 574a953f06d19a3c08a30842c4f9b2f8d7cea42e000f516520817e019f44fd00
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=business+english+audio+lessons+free', which is identified as a malicious redirector. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted from this sample.

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=business+english+audio+lessons+free In PDF document text
    • http://files.golnazbehrouznia.com/uploads/1/3/0/7/130740510/mowopexofegijewo.pdfIn PDF document text
    • http://voteza.legacyofhealth1.com/uploads/1/3/2/7/132741194/pexujirimigufilebub.pdfIn PDF document text
    • http://files.matthebert.net/uploads/1/3/2/6/132695401/gijaminoxowa.pdfIn PDF document text
    • http://files.christinedevuono.com/uploads/1/3/0/8/130813973/8467338.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/1/0450/6284/8664/files/pdf_amazing_grace_lyrics_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2097/files/92611051472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0168/3873/files/adventure_time_mortal_folly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9681/6282/files/82391838931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4938/5110/files/classic_wow_tailoring_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/fikimaxubam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/88319520116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/6th_grade_science_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7691/9200/files/auditorium_design_standards_neufert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8980/3941/files/20582052844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/score_hero_cheats_android.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 4

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_off0000705d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705D 5220 bytes
SHA-256: 3e4084e2d3aaeb48c854eb4582a5a00cd0ffddd6b81f4fdc2bfb2bb669c47702
font_01_sfnt_off0000820f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820F 10212 bytes
SHA-256: dbfb26cb7288412e0307e55caf5ed2f44b8eff2da526b2f70b2bbe606b6dc1f5

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