Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7838254360e880…

MALICIOUS

PDF

38.5 KB Created: 2020-08-03 08:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 423f3472b2c1c9796f2399bec1a46bc5 SHA-1: 341d69ac47e3fd25a0ddae4ae2d45d4ec809468b SHA-256: 9a7838254360e880d1c46567b18186ae4d19b5e7464ce6c5ff93c362acc0fe30
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 resources. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is disguised as a reloading manual. The document body also contains obfuscated text and URLs, further supporting the malicious intent. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute 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.ru/pify?keyword=sierra+5th+edition+reloading+manual+pdf In PDF document text
    • http://files.lifebuilderstc.com/uploads/1/3/0/7/130775245/lagiralejago-likuf.pdfIn PDF document text
    • http://files.trumpsgreatamericafacts.com/uploads/1/3/0/7/130738806/rivuzu-jopipaj-jetutejexer.pdfIn PDF document text
    • http://files.thestylishgardener.com/uploads/1/3/1/3/131398475/fb22edda69.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/1/0432/8374/2884/files/luwasiful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/6160798823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/86785029893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/wiwezer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/xejupadimumesigevugebiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/98602945004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/51328156564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/fuse_on_93_ls400_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9560/3862/files/fozivoxavupirafetodovefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2530/0647/files/55138856458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/34247287810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/549906331.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_off00005663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5663 5504 bytes
SHA-256: 06cf5f966b4dd51122f5efe330be739f7d871bdc2883c44a792bd2d060c067c5
font_01_sfnt_off000068f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F0 10628 bytes
SHA-256: 9972f511c00ca17f5284e05fb5b7dd26494cde9bd6abb92e12e8ba3a74093717

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