Malicious PDF — malware analysis report

Static analysis result for SHA-256 c34abf50c37bbbb9…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 16:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 04f9bd3bea2e793c89a709b355f5d220 SHA-1: 80657f895d16eedf4f340c06ceef8cd3f9f7af4a SHA-256: c34abf50c37bbbb91c1fab83a1aca91da9b3f8edcc80f60279b3387069ea0c77
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=acland+anatomy+pdf', which is flagged as a malicious redirector. This suggests the PDF is designed to lure users to malicious sites, likely for phishing or further 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=acland+anatomy+pdf In PDF document text
    • http://files.teachtechtalk.com/uploads/1/3/1/4/131483214/7180072.pdfIn PDF document text
    • http://files.christianemillinery.com/uploads/1/3/1/3/131380440/a2b53be9.pdfIn PDF document text
    • http://files.navedbakali.com/uploads/1/3/2/7/132740594/rumizivixa.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/1/0431/8671/6830/files/jusosakavulafoxakig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/georgia_driver_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/xaligakaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4455/files/english_reading_lessons_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6844/1254/files/sotodipozibof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/jolasitukake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8738/1155/files/47818161182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/94722492503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1093/0341/files/instrumentation_amplifier_experiment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/96064087141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/86943653168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7066/6392/files/linux_cluster_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5063/1319/files/xuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/html_tags_book.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 3

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_off0000786d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786D 5120 bytes
SHA-256: d4656f8703b244880c1d83b2654b67bcaf1dbab2756b44a601b47f17a3382ec9
font_01_sfnt_off000089d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D8 10412 bytes
SHA-256: 7d4d6fbf436c6b3b7089abd76098dd8e4a456d8761df17530cd189366bed060b

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