Malicious PDF — malware analysis report

Static analysis result for SHA-256 a78996a358ec6029…

MALICIOUS

PDF

59.8 KB Created: 2020-08-03 01:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 269ecf89502f20c05085c9679736c8c5 SHA-1: 2f7779df9711b838e4b7cc18b5253f2bf4358198 SHA-256: a78996a358ec602968c1aab279de41d65a2c906de07778c931e484bce870bf23
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=usb+hid+keyboard+codes'. This link is presented within the document body, suggesting a social engineering lure. The PDF also contains a large number of embedded links, many hosted on Shopify, which is flagged as a link farm. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be directing the user to a malicious URL.

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=usb+hid+keyboard+codes In PDF document text
    • http://files.aria-food.com/uploads/1/3/0/8/130874162/zisudunurazefo_gusigegu_bogeg_bapuzakekef.pdfIn PDF document text
    • http://files.regenerateyourauthenticnature.com/uploads/1/3/1/8/131856122/9146872.pdfIn PDF document text
    • http://files.codymedina.com/uploads/1/3/1/3/131383649/sazob_vefuzoz_kasakaluva_putamogetasu.pdfIn PDF document text
    • http://files.missjordansclassroom.com/uploads/1/3/0/7/130776841/5406440.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/1/0433/9567/8357/files/gezize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9370/4350/files/95717521879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/78755233439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/essentials_of_understanding_psychology_feldman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/xabuludefowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5303/files/97228714365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/algerieinfo_tlcharger_les_journaux_algriens_en_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/lemowoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/power_of_attorney_forms_ma.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_off00009da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA9 5292 bytes
SHA-256: cb3c2697a65efba835ffb60858384dd528c8c60561c37e18a34fa6e097601d29
font_01_sfnt_off0000afa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFA8 16296 bytes
SHA-256: 1599f265fedce0bc1d711f50a5d600eb3bfc749988d0404515c48084674532ea

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