Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aaa5e329d30c389…

MALICIOUS

PDF

39.3 KB Created: 2020-08-16 20:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 082300ee6c5ad1fa3a571f1179607c62 SHA-1: cdb832f5d82f46557cb0b9f4ff027fd640e69632 SHA-256: 8aaa5e329d30c38995fc512b38df141418ce8f84ae00de79584352f157de8ebe
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body itself contains the primary malicious URL, 'https://ttraff.cc/pify?keyword=cnet+s+safe+site', which is designed to lure users into clicking through to potentially harmful sites. The ML classifier also strongly indicated maliciousness.

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=cnet+s+safe+site In PDF document text
    • http://files.recoveringyourlife.com.au/uploads/1/3/2/7/132710780/7009429.pdfIn PDF document text
    • http://xenarux.oregonices.org/uploads/1/3/1/3/131380600/poxajemasekepad.pdfIn PDF document text
    • http://files.misshanson.com/uploads/1/3/1/4/131437799/9728721.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/79265304831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/53803002079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1858/3192/files/wudisadodezivojobopofoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8956/6621/files/80171837284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/buet_admission_question_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/6567/3637/files/first_aid_for_burn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3686/0839/files/girlfriends_guide_to_divorce_uncle_tony.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7204/5734/files/plus_minus_in_latex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/nekolupobabuzalununafo.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 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_off00005de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE6 4540 bytes
SHA-256: d8243a2b9794ce97c6b5e8334ab8785c0798db2fa49c1f095d48a4dad91b4feb
font_01_sfnt_off00006d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D62 10440 bytes
SHA-256: 9f9764dc09165e68b4a7d387e46597118a9a973fc678726dfdea11c97396d299

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