Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bbc4b9d21134293…

MALICIOUS

PDF

39.5 KB Created: 2020-08-03 14:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d9e4431b1c0884788ed743a7505ae00 SHA-1: 06902d07f8dcd5a7352af368a7be4928d675f465 SHA-256: 0bbc4b9d2113429311d4474236bc80b9753ef1c6a2d43e01556dcde4053290a3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains text suggesting it is a PDF about adjectives, which is likely a lure. The presence of embedded URLs and the heuristic firings strongly indicate a phishing or scam attempt designed to redirect users to malicious infrastructure.

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=adjectives+list+and+meaning+pdf In PDF document text
    • http://files.bhlexvolunteers.com/uploads/1/3/0/8/130874539/7bd20.pdfIn PDF document text
    • http://files.thegovernorspub.com/uploads/1/3/1/4/131453718/sufinadaxub-xebarujut-vepesupez.pdfIn PDF document text
    • http://files.jacklechon.com/uploads/1/3/1/3/131379923/juximarekinef.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/1/0430/7173/3917/files/wututipapusokigaxidanun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/fofiguzopolorabevav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/seboxanova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/rojadaniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/76266374010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/gugajapum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/guzirukusenewapiven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/jodozezedovinigazuditami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8711/files/10984660604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/rebubizonaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/80412816214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/zegirusudiw.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_off00005d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D39 5504 bytes
SHA-256: f1db9007ebfa5c5ee06bedb06e71a5c8288fb4df853cd113199356c89725f8b4
font_01_sfnt_off00006ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFD 9728 bytes
SHA-256: 736ce0b4a8022652ba266f2795fc67fde7b740d291464737ecc276b031ad2aee

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