Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9b3aac7218d7cd…

MALICIOUS

PDF

43.8 KB Created: 2020-08-21 12:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f8ddf4fcc38e7f1fad7507e3844c0e8 SHA-1: e973c2c0bfa775ecef138b5f0449c1c54396ba9b SHA-256: 6a9b3aac7218d7cd4cf8a732d74587270d8db105a68fda543c9b02784c28576e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The ML classifier also strongly indicated maliciousness. The primary lure appears to be 'incident reports example software testing', directing users to potentially harmful content.

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.com/pify?keyword=incident+reports+example+software+testing In PDF document text
    • http://files.balibidadaritours.com/uploads/1/3/2/6/132682553/matojezolojobok.pdfIn PDF document text
    • http://files.nadermakki.com/uploads/1/3/1/4/131438639/nosumiweweb-wesosejuloviw-sevudagolidif-pawavam.pdfIn PDF document text
    • http://files.gracevillepilates.com/uploads/1/3/1/3/131398100/jirebokolidez.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/1/0433/0687/7080/files/34007792176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/siwurepikaxeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/advance_care_directive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/96028775497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/kofilesegeduxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/easy_english_grammar_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6810/2558/files/ending_sounds_worksheets_for_first_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4442/2310/files/61691864344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/98987860731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7432/1560/files/the_armor_of_god_bible_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2256/4000/files/35223849084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/somusekubasipada.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 4

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_off00006c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C07 5572 bytes
SHA-256: b1a1e1c07b063237870e25b4812d1f6fbed8e5d216f8bf3bd5965b8e96a374cd
font_01_sfnt_off00007eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEF 10124 bytes
SHA-256: 282c919ac6ba0f23aafc3917ade9b15b48ad2ef413a998945151e5d48c3a1425

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