Malicious PDF — malware analysis report

Static analysis result for SHA-256 67fafbdbb873948a…

MALICIOUS

PDF

48.5 KB Created: 2020-08-19 01:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03014ec0a4ed2af160c4abec9d830507 SHA-1: f3eb62419aba3493d16144e5d8228b90fe5de41b SHA-256: 67fafbdbb873948ab4e4c62419c3c86b08e63326cf0458c9c72c15bb22a1c5c4
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising "Avg free win xp 32 bit" as a lure. The ML classifier strongly indicates maliciousness, and the presence of numerous external links suggests a link farm or redirection scheme. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=avg+free++win+xp+32+bit In PDF document text
    • http://files.pris-t-gis.com/uploads/1/3/0/8/130814101/020118001f4edd2.pdfIn PDF document text
    • http://files.ddoughty.com/uploads/1/3/2/6/132681201/8d3122912.pdfIn PDF document text
    • http://wubakokis.trialinnovations.com/uploads/1/3/1/8/131856935/9413193.pdfIn PDF document text
    • http://files.bolivarcoc.com/uploads/1/3/2/7/132710783/03a669b8.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/1/0431/6374/6453/files/charge_blade_combos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2287/7591/files/65396098862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7251/0362/files/43619339988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nalajenoderemomepofelefa.pdfIn PDF document text
    • http://nizasote.ninepincider.square.site/uploads/1/3/1/0/131070420/sixepiridifesel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/14565865975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/pinidubusubujobivirawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/10134336700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5123/7032/files/vuzaginabebidejedodozesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaragevutaxesidep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/intel_processors_performance_order.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000694c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694C 5296 bytes
SHA-256: c41c3581e0fbd08fb0196546a0fd22b5829aaa3077026fb831929eb2adc35200
font_01_sfnt_off00007b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B85 10512 bytes
SHA-256: 9bee32feaefe0aaea7398c8f174959714b8655f3a0a7fe279f244e4a5afbff88
font_02_sfnt_off00009f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F68 16144 bytes
SHA-256: d2d14ee152591f1391b9c182731dc81228c2f3de4d706c9bd7d93c14ae925181

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