Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba0773f2bfdc39f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-08 06:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b3e040d33e5c5b2601b18a0e3b175e5 SHA-1: f972ad1ef2b4c08d32799dc5879bffac6fbc88fa SHA-256: 6ba0773f2bfdc39f5a96c3758d69bd47e4609c785b2095559c9e45ddf7b37b16
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to a redirector service, which is a common tactic for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of SEO-optimized PDF links suggests an attempt to mask the malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious lure.

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=improve+confidence+pdf In PDF document text
    • http://files.backline-eng.com/uploads/1/3/1/8/131859895/gokijifinafogur.pdfIn PDF document text
    • http://files.meghanfoleyyoga.com/uploads/1/3/1/6/131637409/nowax.pdfIn PDF document text
    • http://files.prettybauble.com/uploads/1/3/0/7/130739480/6f87809a7a.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/1/0433/2955/2552/files/rudens_plauto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negopolikutowuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/zelagekubipuwujugeremoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2091/0746/files/31574558118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/85115587906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/blender_2._8_shortcut_keys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5881/3333/files/24681081565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4053/8773/files/gadafuzepojot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/maditoluvajorofokosugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/gerewiposakujoguripudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/java_stream_filter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5798/files/fuwejubatululazixeboza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1349/7251/files/42084194416.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 7

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_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 4876 bytes
SHA-256: 69bf13d436d452c97b4243e848e253f88ede48ac981192f58b35b5e410255155
font_01_sfnt_off000073e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E2 9992 bytes
SHA-256: 26679b204821a4e8e910a872ecd3ea51ab56f6cd88fa6e2a87bb71d67d25a5f9

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