Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d506adcd9980615…

MALICIOUS

PDF

49.2 KB Created: 2020-07-28 11:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fae4a800900c388c89d2624dbaf1b71 SHA-1: 7ec30871c740a500a87f11ed7ec86264595b3630 SHA-256: 6d506adcd998061540fcdc19fe7cd075f084ddbc6e5376e78e0ec444f9688468
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to a chemistry topic. The presence of a large number of external links suggests a link farm or SEO poisoning tactic 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=benzaldoxime+exists+in+how+many+forms In PDF document text
    • http://files.stevewestgroup.com/uploads/1/3/0/7/130740256/pajibizitazuvat.pdfIn PDF document text
    • http://files.sharonreay.com/uploads/1/3/0/8/130814118/dowikatu_demanefazikelif_witakulo_dejaxod.pdfIn PDF document text
    • http://files.dunphyshandguntraining.com/uploads/1/3/2/6/132681566/d354c601d.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/1/0427/5663/6828/files/20680960046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/tupefededokexuladekiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/vegukekiposapuvofir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6518/0314/files/38799286802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/fifepisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/87616814410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/31534072190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4677/files/viranagemuwumazunil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7992/files/90287854482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/jusuxonikanuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/97496057959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4038/0840/files/jujopijilotofo.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 8

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_off000084a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A1 5296 bytes
SHA-256: af601ed0e00a0804e8f9e370ae424c8808b1cd8aa6678c20fbab227eed6403a2
font_01_sfnt_off00009697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9697 9560 bytes
SHA-256: 408cd1b760da3c74b7009e79ae32e332331428d5f14c2ff0b4be5b3d4a715c57

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