Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f2794b64d7472c…

MALICIOUS

PDF

53.7 KB Created: 2020-07-29 22:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e7f2241a61c81e8ce67e092781174db SHA-1: a0d8b5f2a9bce31dbc323bebe86823db932311ae SHA-256: b9f2794b64d7472c3be9f9e6e1e4a64ce966d878f354504f7b35001b7ba87768
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, suggests a lure related to a manual, and a medium heuristic indicates a callback phishing or tech-support scam context. The primary attack vector appears to be directing users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=alcatel+one+touch+1016d+manual+pdf In PDF document text
    • http://files.auroraindustrial.co.uk/uploads/1/3/0/7/130775850/1311949.pdfIn PDF document text
    • http://files.xinchengqiu.com/uploads/1/3/1/4/131438604/jajavud_sivifaviroxaw_kowebajabab.pdfIn PDF document text
    • http://files.camillasamengo.co.uk/uploads/1/3/1/8/131856173/kuwepukadoluwubogoro.pdfIn PDF document text
    • http://files.thereachstudy.com/uploads/1/3/0/9/130969003/0d24fd.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/8003629611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/xafozedod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/8662663883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/lifinabijokukixuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4535/4658/files/tixosovepubesejupem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/85173148707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/26375087182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/piwijodikujez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/nepararibajaxufulil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/38253286006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/xerenosizafasufadunumaxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/pupumimabupeg.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9412 5292 bytes
SHA-256: 7202f9cfe4c68758dd7e12bfed9123e70504cfad400a66f332453ad4d34e3010
font_01_sfnt_off0000a5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E3 10396 bytes
SHA-256: f04f55244093a65e4866e28c1cd56b043934ba000568e4d2a1aa6fa8b347380d