Malicious PDF — malware analysis report

Static analysis result for SHA-256 0874957ac82690df…

MALICIOUS

PDF

43.5 KB Created: 2020-07-28 04:24:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 42bdf97858591bf8ab2d4cecee85513c SHA-1: 224e0ceef6b3eb957e284648e6c1ddfa8893a3e7 SHA-256: 0874957ac82690df6f5f9b21d52d572ff74b988c85754041ecc22dd35903d895
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, specifically pointing to 'ttraff.com' with a lure related to 'ibm aix java8'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the nature of the heuristics suggest this document is designed to redirect users to malicious sites, likely for phishing or malware delivery.

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.com/pify?keyword=ibm+aix+java8 In PDF document text
    • http://files.kassandraheap.com/uploads/1/3/2/6/132695662/kopifopija-jenesabiru-bujapolalig-semigubob.pdfIn PDF document text
    • http://files.simonshotdogs.net/uploads/1/3/2/7/132710627/9264870.pdfIn PDF document text
    • http://files.startfreshfitness.com/uploads/1/3/1/4/131406811/3852e418302.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/1/0438/8493/7384/files/kudizuxudakudozukazibox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1704/3111/files/gavifunipokelefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2553/6936/files/43081918111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/83514436858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7471/4784/files/42240578883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7667/1895/files/gumolibubipadozevibiwuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/bogewiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/14981909947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8166/1600/files/gepezufedoselusujovag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/4918782814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7569/files/84756106951.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 2

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_off00006f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2E 4372 bytes
SHA-256: 168b2c858fb83b2c0a0184ec95660397acf50731888b0be79d341ddd182f3be5
font_01_sfnt_off00007dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 10332 bytes
SHA-256: 6ce15972a16fb86c5e181d854c84d09d5df503fd6e9af8d3fc1fe3d4d3b8c1f7

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