Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c9bb7b78c9ee1d…

MALICIOUS

PDF

107.2 KB Created: 2020-07-29 21:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f78242c3b3f572e3c166a6db80f8b21f SHA-1: 79825d6d02b87dcd30756d5482ec633acfb1e821 SHA-256: 95c9bb7b78c9ee1d800ebb282605adf98d142d58d459843914fc94b8dd78813f
214 Risk Score

Malware Insights

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

The PDF contains numerous links, with one heuristic specifically flagging it as a malicious redirector. Another heuristic indicates a link farm, suggesting an attempt to manipulate search engine results or distribute content. The document body, though heavily obfuscated, contains keywords related to 'cessna 210 poh pdf' and 'wkhtmltopdf', indicating a potential lure for specific users. The presence of a callback phishing lure heuristic further supports the malicious intent.

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.cc/pify?keyword=cessna+210+poh+pdf In PDF document text
    • http://files.mycitywebworks.com/uploads/1/3/1/0/131070846/rukutafibef.pdfIn PDF document text
    • http://files.ericscottsutherland.com/uploads/1/3/0/7/130738722/rexomedikomuv_kukemeku.pdfIn PDF document text
    • http://files.hornfree.org/uploads/1/3/0/7/130775529/gatipexib.pdfIn PDF document text
    • http://files.magicalforestcreations.co.uk/uploads/1/3/2/6/132695663/xexaduxa.pdfIn PDF document text
    • http://files.whollysimcha.com/uploads/1/3/1/3/131381919/452119.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/1/0427/8072/1311/files/27370060694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2103/files/6014087622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0813/0213/files/25168684913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9226/2560/files/94360514936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/5707109924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/sowibupekip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/fivuwazililab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3359516262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3051/9709/files/pusifar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/fesadoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2602/8456/files/72596865340.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_off00016452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16452 5008 bytes
SHA-256: 6e0cbf0a93234386977edbe45045bf06f774b534a404e20d76caa4e494f2458e
font_01_sfnt_off0001754d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1754D 12988 bytes
SHA-256: 5b64cfa7771297050011199c365b72b86315f67fbc11c4452aec2042ee1e7a2f