Malicious PDF — malware analysis report

Static analysis result for SHA-256 395b1da20c08f9fa…

MALICIOUS

PDF

34.8 KB Created: 2020-08-10 08:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af5e7cac09f7ef464f5bdf669ba3edd9 SHA-1: 759496d9ce557f2f7ca573752ea62861016ebd13 SHA-256: 395b1da20c08f9faeef3bbbae92fc68c37d6bf665aec3272754dd7cd965e2690
194 Risk Score

Malware Insights

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

The PDF contains a deceptive title and a critical heuristic firing for a malicious redirector link. The document body, though partially corrupted, includes the same deceptive title and a URL pointing to a malicious redirector. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm designed to distribute malicious content or improve SEO for malicious sites. The primary malicious URL is https://ttraff.cc/pify?keyword=english+textbook+9th+grade+pdf, which likely serves as a gateway to further 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.cc/pify?keyword=english+textbook+9th+grade+pdf In PDF document text
    • http://files.the3gs.org/uploads/1/3/1/1/131164081/waduzololu.pdfIn PDF document text
    • http://files.martindewittfinearts.com/uploads/1/3/1/8/131856433/lenufi_kixomenixi.pdfIn PDF document text
    • http://wirozizon.sailingfrannie.com/uploads/1/3/1/8/131856919/f3237f206e.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/1/0432/3750/7240/files/59880304521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6071/files/kevudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/morarakibuvopomeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/zegotofupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/97714901134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/64633149342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7574/7483/files/sewufepak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/dujimiduj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/81283284922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0000/2717/files/soft_tissue_augmentation_principles_and_practice.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 6

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_off0000480b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x480B 5688 bytes
SHA-256: 16d6a71084d65ad4e17967de8302754400eb7ccdc2dc3f5d107e89195ef1ef4e
font_01_sfnt_off00005b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B62 10256 bytes
SHA-256: 534c1216d133afc37ee731533d49b101ba20588d72cd95023c660bd195e5007a

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