Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6a6e36450e37138…

MALICIOUS

PDF

42.6 KB Created: 2020-08-04 01:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1221740dc7155f398a1303efe6b523b5 SHA-1: 698b31866944acbb017bc28546f16107b855e02a SHA-256: f6a6e36450e37138092dbc006f61fe5fb1824f53a1e48cec9b05d026e31bde14
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector URL, which is a common technique for phishing and malware delivery. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the redirector URL, suggesting the primary intent is to lure the user into clicking the malicious link. No scripts were extracted, limiting further analysis of the payload.

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=gastrulacion+embrionaria+pdf In PDF document text
    • http://files.gsskids.org/uploads/1/3/0/8/130873973/korunavo.pdfIn PDF document text
    • http://files.centraleastwoodrugby.com/uploads/1/3/1/6/131637081/kololuzo_teganutu.pdfIn PDF document text
    • http://files.cinnamontology.com/uploads/1/3/0/7/130738993/9581760.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/1/0433/9898/7941/files/posep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/58445226439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/28532859638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/musesilided.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/zozusuniwavaxiles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/bikib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/tofepiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3338/7423/files/favisebovuxaxupug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/what_is_zip_code_on_visa_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesitoxerevujadutag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/6718768405.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_off00006a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A69 5472 bytes
SHA-256: d187a52fe863934beb778ee7cfc9b24ce71c466180ab77665bd05a054cedd4d4
font_01_sfnt_off00007cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEA 9648 bytes
SHA-256: 60ddba77e94c420995cb1884ccceae0d54239ced6f1f4508c2224ef6b843833e

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