Malicious PDF — malware analysis report

Static analysis result for SHA-256 64520ac35774c792…

MALICIOUS

PDF

59.2 KB Created: 2020-08-08 00:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b1daa7e6987faec9f2a65941a940482 SHA-1: b8cbc6219e471a729d1b7db2cb6035945aff568d SHA-256: 64520ac35774c79263623eb1bcb6879d1e2b7762ab0417cf8212e86b063c83bc
194 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to redirector infrastructure, specifically identified as a malicious redirector by heuristic rules. The document body, though obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the primary purpose is to redirect users to malicious content, likely for phishing or 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.cc/pify?keyword=bsc+courses+list+pdf In PDF document text
    • http://wuval.projectrunlove.com/uploads/1/3/1/0/131070161/turepofosop.pdfIn PDF document text
    • http://zafikubej.ootmahoosewindae.com/uploads/1/3/2/7/132740930/sisod.pdfIn PDF document text
    • http://files.eastgeorgiaservices.com/uploads/1/3/1/8/131856743/zitozun.pdfIn PDF document text
    • http://files.nicksforzaferrari.net/uploads/1/3/1/6/131636843/dedam-welodetorilozi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/63229841763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0344/4380/files/action_and_helping_verbs_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/21335974918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/13119892174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/90529608241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5693/9676/files/physical_description_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2817/5265/files/pomejamebipajediwonas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/selutojiliwilapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/23549141845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/pdf_agama_kelas_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/xoninijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/84164732732.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
🗂 Part of campaign: yodaveproducts.com 4 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9D 4764 bytes
SHA-256: 3f0bed30e83686f5fe3724f439f16d5f4f973a500b74ac57e12edcf2dc2c2635
font_01_sfnt_off0000ade6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADE6 10480 bytes
SHA-256: a72e1844e4cfba75fb1eec9f51bf0828661170e4750730b660b858cef977bfed
font_02_sfnt_off0000d184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD184 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361