Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2a4bde89b0b09e…

MALICIOUS

PDF

43.7 KB Created: 2020-08-12 03:31:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb34ce307d47bb75faf2960f64eb1b87 SHA-1: e97ae601fe93e19ed95eabb07607f1418db6b073 SHA-256: fd2a4bde89b0b09edf78b142e10ce5d1fcefbd89187c4eb577bea01a598a5160
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The document body, though heavily obfuscated, contains URLs that are consistent with a link farm designed to distribute malicious content or phish users. The primary malicious URL identified is https://ttraff.ru/pify?keyword=calidad+ambiental+concepto+pdf, which is likely part of a campaign to drive traffic to malicious sites.

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=calidad+ambiental+concepto+pdf In PDF document text
    • http://files.sleepingbeeathome.com/uploads/1/3/2/6/132695701/4744904.pdfIn PDF document text
    • http://tonode.bonnieblueflag2124.org/uploads/1/3/1/4/131453541/67c258d2b9908.pdfIn PDF document text
    • http://lajon.direwolfomega.net/uploads/1/3/0/8/130814124/wexezetibovi-vumuberominef-gupediroz.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/1/0434/0505/0021/files/divewunidoveva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/xebezogafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6880/7586/files/52846596241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2103/files/6014087622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/79192484921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/12558393274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1156/3932/files/99399911770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/5090917243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8581/files/jupegenemajiwutadegiwiwuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/xaxasefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/banigibolorawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1657/6424/files/davukizomedolosofo.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_off00006deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEB 5072 bytes
SHA-256: ff9efe626c27242141a029719b3fd9d7aab79f39bcb6d9a3d6c895742c30a4ea
font_01_sfnt_off00007f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F17 10828 bytes
SHA-256: 220d3fb9e3950c71b79288534c2b853066c42fefb411542023fb09159fda51b6

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