Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55b22c66fbce756…

MALICIOUS

PDF

43.5 KB Created: 2020-08-12 10:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90ad275b6e512d5b440801e8ca3c84db SHA-1: c3adb0acaa1e0b46ed2269852d1603e5e050ee43 SHA-256: d55b22c66fbce7566c98eb8003cce1d1b2921692d777b65dd79be13ddb845412
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identifies a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=audyt+it+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of many links, including those hosted on cdn.shopify.com and other domains, indicates a broad attempt 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.cc/pify?keyword=audyt+it+pdf In PDF document text
    • http://zavugij.nutritionandhealthfiji.com/uploads/1/3/1/6/131637881/6425060.pdfIn PDF document text
    • http://xurutufi.annheideman.com/uploads/1/3/1/4/131452883/renerewefaxaxo.pdfIn PDF document text
    • http://files.marthaheil.org/uploads/1/3/0/7/130740596/sazorefu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/laliga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/5482956621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/work_permit_application_form_thailand.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/kufon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/tojakege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9154/6532/files/angielski_b2_ksika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3034/2806/files/convert_small_to_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0853/8262/files/dotupaxasilurekuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1402/files/25123906084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woburorofinuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1297/9879/files/degakisagiliri.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEA 4160 bytes
SHA-256: 78b3f7700af8586c3533a497804e309e712486465d8e68dd2d300e8ff3668d77
font_01_sfnt_off00006e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E15 11168 bytes
SHA-256: 0fb7cfd0c6f15bbc6437a0fbcd5edbead05825dc0fadaf100a6d4b0393b2a93a
font_02_sfnt_off00009382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9382 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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