Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ccfd504e4ea87f5…

MALICIOUS

PDF

36.1 KB Created: 2020-08-12 09:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4095a7a0766a362b1de23b581a419700 SHA-1: c342fe4001b3c117e29f7657cfd43764604d8103 SHA-256: 5ccfd504e4ea87f5c34b47cdbe61ccf34b25dbd44b2c23f4fc45082bacae32ed
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, masquerading as technical documents. One primary URL, 'https://ttraff.ru/pify?keyword=inverter+welding+machine+circuit+board+pdf', is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to lure users to malicious infrastructure, likely for phishing or malware delivery.

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=inverter+welding+machine+circuit+board+pdf In PDF document text
    • http://files.hornedreaders.net/uploads/1/3/2/3/132302960/wofekijewisofibajap.pdfIn PDF document text
    • http://files.ottawanavyleague.org/uploads/1/3/1/8/131856326/17e918.pdfIn PDF document text
    • http://giwagene.wrightsltd.co.uk/uploads/1/3/1/6/131607029/3655428.pdfIn PDF document text
    • http://werilina.telosmagazine.org/uploads/1/3/1/3/131381489/86839b5.pdfIn PDF document text
    • http://files.powerboxingfitness.com/uploads/1/3/1/3/131398125/d58287e.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/1/0430/8592/2466/files/jiferar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/68034539391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/tunenagususegezedame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/8317603387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/sapamovev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/24874619352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/azure_stack_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4213/6476/files/90126250533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/92657103351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/40655584571.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_off000050a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A1 5620 bytes
SHA-256: decdbaf4d88525a5ec0a3c746eb63a8da2448e68c2ee4a637e4066ba2fdc7237
font_01_sfnt_off00006394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6394 9396 bytes
SHA-256: f503128cb49048e5ec7d7165eec4f62f80c20b13471a9a1d5328debbe6ef2625

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