Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9b613d9b30ea51…

MALICIOUS

PDF

50.0 KB Created: 2020-07-27 16:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad84fe35e4861aa67ff636658e7a5e87 SHA-1: a36be8e3cbd89b1d1a40d86cb0378d6fae504dda SHA-256: 6a9b613d9b30ea51eb0d43b7799b12c20662b24d4f70158b2e469fc9a4e04174
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. The document body, though heavily obfuscated, suggests a lure related to a 'Shape of molecules worksheet'. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs confirms an attempt to direct users to external, potentially harmful, sites.

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=shape+of+molecules+worksheet In PDF document text
    • http://files.creameryartscenter.org/uploads/1/3/2/7/132740628/982905c820b0d93.pdfIn PDF document text
    • http://files.themastectomystore.com/uploads/1/3/1/3/131397996/9353995.pdfIn PDF document text
    • http://files.afitconcepts.com/uploads/1/3/1/4/131408103/vixirolik.pdfIn PDF document text
    • http://files.mexicolegalhelp.com/uploads/1/3/2/6/132682134/timulapafaji.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/1/0431/8255/5297/files/70490645197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/gebixozalutuzewelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/jojarap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/63192582128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/69405472189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/22640739107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/52782298913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/38434486693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1538/7811/files/32559164103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/fejonomezixatezafefuvim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2891/2040/files/74206192843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6668/6617/files/2658224490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/jokubuvamilet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/namivijakezeku.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 6

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_off00008694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8694 5244 bytes
SHA-256: 49c1faef7a8d382a886c71c3344b4a92ee06c651e1dc02deecf83148dbcd4377
font_01_sfnt_off00009880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9880 10004 bytes
SHA-256: 1b9c144141e4fac7b3d97dc5ccf051c34884e2c23b378ee56e99a787360f1203

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