Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c8aa06853966952…

MALICIOUS

PDF

39.4 KB Created: 2020-08-17 09:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fb8ae580466ddc33038b2c47cb90607 SHA-1: 88d04974f1b702839182ee615ad315f12614d159 SHA-256: 6c8aa0685396695264998595c0b212fafaff926412b0a806142e1054832be15c
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains the same malicious URL, suggesting an attempt to trick users into clicking it. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, further supporting the lure for phishing or malware distribution. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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=cedron+propiedades+medicinales+pdf In PDF document text
    • http://nogap.biglittlebrains.com/uploads/1/3/0/7/130775413/goxowomavepibob.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/1/0428/9835/8432/files/18410569865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/penyelesaian_arbitrase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/62677902189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/head_shoulder_knees_and_toes_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/22578487468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/96730696872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/damijesesilasodozedujig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/30873108119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0775/1838/files/japikasojawin.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: jenvie.com 3 samples

Related samples 1

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_off00005b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B58 5208 bytes
SHA-256: 9839a66a0e3265162a2fe16ffc2d4d0036a65f6a98796ee118b7d40b2ae884da
font_01_sfnt_off00006cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEA 10616 bytes
SHA-256: 2226c17b3e9af2fa9d7543cb5c56e874054035e19d60addfff59dd9a3c55e665

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