Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb20c58ff5cff1db…

MALICIOUS

PDF

42.1 KB Created: 2020-08-01 19:11:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5369569b64ab95eb17d404996a73683 SHA-1: 67328db09f0c5f0091fd1094b140b163656b6e06 SHA-256: cb20c58ff5cff1dbde3849199dc8527b1cf644d81b69bdee97820089c2bd8fa4
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=2017+postage+rate+chart'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution. The presence of a large number of external PDF links, many hosted on Shopify, further suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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=2017+postage+rate+chart In PDF document text
    • http://files.melvinmorsemd.com/uploads/1/3/1/4/131453399/634181.pdfIn PDF document text
    • http://files.bhgs.org.uk/uploads/1/3/0/8/130814397/898654.pdfIn PDF document text
    • http://files.alekstinapoodles.com/uploads/1/3/0/7/130776519/4314976.pdfIn PDF document text
    • http://files.cadellcabins.com/uploads/1/3/1/4/131408970/5109691.pdfIn PDF document text
    • http://files.conditionsforlearning.com/uploads/1/3/0/8/130873958/8351454.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/1/0433/9708/7390/files/7755442510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6934/9794/files/86354609640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/22949761767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/31778335304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2823/3887/files/vagodotowafipugalavekon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/91353722032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/tiwipodogemikukojak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/61721900682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1924/files/97516274754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6859/5112/files/40423285777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5483/3564/files/suzeniguzitoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2595/4973/files/30806149984.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_off00006642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6642 5476 bytes
SHA-256: 5d78425bc890804b5f2a0c66066876e484e3ec3e82272d23b7e861c7c40e0124
font_01_sfnt_off000078e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E3 10168 bytes
SHA-256: 4f396a6d70c873c482cbdaac69d47c98a5ee748b215017ffcf7074030703583d

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