Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbc9e50225c2d2c1…

MALICIOUS

PDF

46.5 KB Created: 2020-08-23 19:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38ba9944461a11adc17abbb7d755b288 SHA-1: 44429feba812bd677ec5df7e386eb17042bf9a45 SHA-256: cbc9e50225c2d2c124d85f3fad59cc8505be68a27f09c03c227ec3384cbbc874
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to ttraff.cc. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary malicious link being https://ttraff.cc/pify?keyword=important+synonyms+and+antonyms+pdf. The document body, though partially corrupted, contains text related to 'important synonyms and antonyms pdf' and the malicious URL, suggesting a lure to a malicious site.

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=important+synonyms+and+antonyms+pdf In PDF document text
    • http://files.dianastoic.com/uploads/1/3/2/6/132696113/futepudi.pdfIn PDF document text
    • http://files.organicpricezone.com/uploads/1/3/1/1/131164125/4294991.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/1/0431/7931/1268/files/sifajimanutexizedilotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1968/1437/files/36021297006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/23225458182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4098/8575/files/74427305958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/poison_5e_condition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/7750810693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/payment_agreement_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/21081487804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6296/6937/files/rifijubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5000/0796/files/wow_prot_warrior_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4414/2245/files/absceso_perianal_causas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/78858056525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/free_world_group.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_off00007974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7974 5196 bytes
SHA-256: 88516cee284701518cb5e1c50bd4a70abc95c9d8d032c423747f37b7dc701523
font_01_sfnt_off00008b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B03 10012 bytes
SHA-256: 29bb5c4041360b5ea6ee726c799b309521eeb45446532f8de1de6c8b75fd8991

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