Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc0d244900716b7…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 01:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e526a1fdc6819a202bc464943810b42 SHA-1: f3f62aab42d5d5c3f3172f7c36350bfa07eb86af SHA-256: ffc0d244900716b78f757104f20ea3c010c9b0054638a478a9dff9d8c337ba08
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=birthday+cake+pics+free'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector URL is sufficient evidence for this assessment.

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/pify?keyword=birthday+cake+pics+free In PDF document text
    • http://files.benes.edu/uploads/1/3/1/6/131636719/166fe13eb916.pdfIn PDF document text
    • http://files.livingwatersapostolic.com/uploads/1/3/1/4/131482931/255b43e3bb18.pdfIn PDF document text
    • http://remosoz.littlebitfishy.com/uploads/1/3/0/7/130739561/nokuwodarinab.pdfIn PDF document text
    • http://wilaz.getbodyfood.com/uploads/1/3/1/3/131383483/lanujo-ribefud.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/1/0437/0386/1416/files/terminal_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/sagoliwudazugupegilusobov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6333/6350/files/95116102649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/rexoguwovaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7465/8197/files/59679253164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/jewobotifikanidepodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38967404473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9108/6750/files/dotoresega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/58763107369.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 5

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_off0000602a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 5428 bytes
SHA-256: 0f72084add4f2752c0acb5cd4a3950b4816cadb7bb998406df8873ec3d202a2f
font_01_sfnt_off000072a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A1 10188 bytes
SHA-256: ec7e4062c38998000c0c4bae743f0cc56a4265f1147d006c88b773b83e01c45f

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