Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2445a786bae4cd…

MALICIOUS

PDF

38.9 KB Created: 2020-09-14 05:29:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61488d30c110b798c8f2b698313fabb2 SHA-1: d03a7a9622cd5c578d5cf58314556a9df3a9d35a SHA-256: bd2445a786bae4cd0a5cf7730c9f588ac444c5aea932a927a2707a5fae3e7fe1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service designed to obscure the final destination. The primary link directs to a URL associated with known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to educational topics, likely as a lure to encourage users to click the malicious links. No scripts were extracted from this sample.

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.club/pify?keyword=units+analysis+and+si+unit+conversions+worksheet+answers In PDF document text
    • http://pafujokal.emmauswellbeingmatters.com/uploads/1/3/2/8/132814838/zuzodemolabafi.pdfIn PDF document text
    • http://kumor.magicmomentsprincessentertainment.com/uploads/1/3/0/8/130873947/e918e4020c1a.pdfIn PDF document text
    • http://files.memphismummies.com/uploads/1/3/0/9/130968960/jagivudofe_kadetutenatu.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/1/0440/5349/5958/files/kidufedajamiluxizor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/kajozixopunonoropigefovob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7994/9733/files/15249938509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/rirevopinoxavubezefeb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/46a5ae_16d3a46425cf4ebfba690054dc0de581.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a298ce_1d5637d14cf043db9b544189c1c35868.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/405339_4514e6aa74d345e58f87614626e7de6e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/97368a_10a7faf9ac9941e9b8a03f4b2c74cd50.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/35c6e2_7940759b912148c294862cad39bbc2f3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8ebb60_bec3e10e871841a08eb53669c08f0cbf.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 2

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_off00005a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3D 5336 bytes
SHA-256: 2321023077c72df639336cb2b2c44dca680a3df02eee9a934fe7a8149599bbe9
font_01_sfnt_off00006c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C79 9940 bytes
SHA-256: 30ea5f25f5e43793d8112991f247ee0ee6b7746a70ab67f26b30ffbb0be29e01

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