Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4c212a3925cdc64…

MALICIOUS

PDF

65.2 KB Created: 2020-08-02 17:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e86b561e9ec2e79845e4f04d5645e7c1 SHA-1: c72a398333bfad1dd4bde81417de53b580bcb7df SHA-256: a4c212a3925cdc6471d67f91ffa1cc3ec62b9476bf0af05892f972ff68a01faf
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=sin+cara+mask', which is likely used to redirect the user to a malicious site. The presence of a large number of external PDF links also suggests a link farm or distribution mechanism.

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=sin+cara+mask In PDF document text
    • http://files.rezabekvineyards.com/uploads/1/3/0/9/130968917/6292429.pdfIn PDF document text
    • http://files.jflesher.net/uploads/1/3/2/6/132683069/kitalusikojelire.pdfIn PDF document text
    • http://files.lizfuscoart.com/uploads/1/3/1/6/131637477/ratorabigoz.pdfIn PDF document text
    • http://files.allcoverbookdesigns.com/uploads/1/3/1/4/131454207/petaxopi.pdfIn PDF document text
    • http://files.movement-intelligence.com/uploads/1/3/1/4/131452811/bf562d1f.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/1/0431/0014/3777/files/xokelosetibiwodawigux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6315/6641/files/juzuxipulemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/15954648783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/26281081902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30812088679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/sineziritanaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/26282448580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9050/9977/files/18767013934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/garageband_11_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0696/6429/files/28951132151.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 8

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_off0000bf9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF9D 5080 bytes
SHA-256: 30da1ad690c251e92ab8544da3ca214caee97f9a13694df585de682b5c696390
font_01_sfnt_off0000d0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D0 11712 bytes
SHA-256: 04e7653e90842f5d2b26dee09ac8d36b5c711887aa8e3e6174c39bd681b6c7f7

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