Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf73293c275f1cad…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 05:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eeb9338572d82a84b43fbaf2be98e35d SHA-1: 04baddbd0e05ebf472546fc760ee3f6ddca2effd SHA-256: bf73293c275f1cadcc36deec5b3d7b405e4c47a686e32266b610052307df5804
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The document body, though partially corrupted, contains text related to academic dates and the authoring application, suggesting a lure to disguise the malicious links. The presence of a link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, 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=mdu+date+sheet+reappear+6th+sem+2019 In PDF document text
    • http://gaduwoz.hillsideauto.org/uploads/1/3/1/4/131411150/3e12a733e3801.pdfIn PDF document text
    • http://files.shannonedwardsphotography.com/uploads/1/3/1/8/131858044/leditoto.pdfIn PDF document text
    • http://pogediw.tamara-vasquez.com/uploads/1/3/0/7/130776089/3befbb40ebea59.pdfIn PDF document text
    • http://files.lusakaliving.com/uploads/1/3/0/8/130815014/zageki.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/1/0429/9007/6057/files/38724342689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/37834509385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/91773516210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/68723288978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/gigowenixikazepegidisug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0700/8168/files/ada_compliance_checker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/8871413193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4426/5366/files/calculus_early_transcendentals_11th_edition_anton.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_off00006008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6008 5808 bytes
SHA-256: 0709a7a93688398b73fbea1adef282ff02eea4371cbe959a9a8c6a3b9856dc53
font_01_sfnt_off000073ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73AD 11328 bytes
SHA-256: cb2f6eba54b9c0c75df6971ae47c49629d5d2558c2ffeead5eb70d7c24184cda

Open this report in the interactive analyzer, or submit your own file for analysis.