Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6a8bc8f08853bf…

MALICIOUS

PDF

45.2 KB Created: 2020-07-25 01:33:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed84feceab0ca2083edd0a0941aac1db SHA-1: e25e0f8f95365e5e315ce675f3bdd20caf7b8084 SHA-256: 6f6a8bc8f08853bfd7449eddeb2a991af1af79481b07a0d2dd7b7b3ab9b5043a
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to distribute further malicious content. The ML classifier strongly flags this PDF as malicious. The embedded URLs and the document's structure point towards a phishing or scam attempt disguised as a contract template to trick users into downloading more malicious files.

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.cc/wb?keyword=contract%20de%20vanzare-cumparare%20auto%20belgia%20pdf In PDF document text
    • http://files.julianneensley.com/uploads/1/3/1/4/131437438/lusajude.pdfIn PDF document text
    • http://files.mjrlashes.com/uploads/1/3/2/7/132740445/bupebelete.pdfIn PDF document text
    • http://files.forgeriesblacksmithing.com/uploads/1/3/1/4/131406430/6135460.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/1/0431/4556/0220/files/85551093680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/wexozoperaginizujuwuraxuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8846/8376/files/dedamesolosodeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/jisirari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/sinuwaxixomadaxesam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/lapudimubazutizonofemuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/39185278306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/78959412489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/nazimidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/82028543426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugerivedisabuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4023/files/93615875756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/19222387837.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 3

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_off00007266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7266 5484 bytes
SHA-256: f8131d6cb9460b42947038df0ca40a93ca57d025d1032749d4d18ef2fae4c130
font_01_sfnt_off00008502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8502 10068 bytes
SHA-256: 8b35606b9a2872a53ec2580479b31252af92a47e7f148318ed54dc49bad825e2

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