Malicious PDF — malware analysis report

Static analysis result for SHA-256 242668f38e7ca041…

MALICIOUS

PDF

44.0 KB Created: 2020-07-27 04:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01e28be207db8c6bbdba56c5d5a05ff0 SHA-1: a1763c964ecd63c553e9533e61461c71d901087e SHA-256: 242668f38e7ca041a828ae5a4c633016ac2c14cf3408d21c6d5652b0bd0659bf
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a cost accounting standards guide. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the embedded URL leads to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=cch+cost+accounting+standards+guide In PDF document text
    • http://files.lmc-photo.com/uploads/1/3/1/4/131454126/e61fe6d.pdfIn PDF document text
    • http://files.vintagegypsysoul.com/uploads/1/3/1/8/131858045/7865797.pdfIn PDF document text
    • http://files.breezypointdermatology.com/uploads/1/3/1/4/131406806/8690636.pdfIn PDF document text
    • http://files.travelreiters.com/uploads/1/3/2/7/132740619/jaxigojiwoliwos.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/1/0429/2729/2582/files/titozibumovepoketewigiram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/16248631208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/lomavafuben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/77995881727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/sotovag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/22859888540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6758/0322/files/viworovulerunabiwisabegaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4460/8920/files/72191153061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/39264263625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/92745594302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6653/0728/files/28565937403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/kamatinuxijanewu.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 7

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_off00007051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7051 5076 bytes
SHA-256: b874971e84de888bae6ab265c5d1206aafd2d346d7a3f31db9c506bac88b2269
font_01_sfnt_off0000817a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817A 9704 bytes
SHA-256: ad4be5be913620c667e3849276a881b7245c57684ed120ba58e8f89726b90527

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