Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1e9f9898fee175…

MALICIOUS

PDF

39.3 KB Created: 2020-08-21 08:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 044a5c01933d1b6a87f84fa1816e6788 SHA-1: 461a15c803b8ea6fbe5c1f7f101180de36f73a90 SHA-256: 0a1e9f9898fee1758b3f0c38a1b474cb4afff78367516ec51bb1fd00dfc05381
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector URL (https://ttraff.cc/pify?keyword=circumference+of+circle+worksheets+free). This redirector is flagged as malicious and is part of a link farm, suggesting an attempt to distribute malicious content or phish users. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking Shopify URL, reinforcing the lure of free educational material.

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=circumference+of+circle+worksheets+free In PDF document text
    • http://files.vancouver-landscaping.com/uploads/1/3/1/4/131406544/depuwemozo.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/1/0435/8003/1137/files/65260372754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6240/files/resaxifojolimabixagusex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1239/9010/files/bisiguxutevoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4446/8901/files/mepiwujozaponiteguzadov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/06_grand_prix_owner_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8923/1014/files/kepitorugiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5805/9674/files/companies_acceptance_of_deposit_rules_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/14673662291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5714/4230/files/17744633070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9643/2021/files/78705852961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/53563191366.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 3

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_off00005d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D50 4972 bytes
SHA-256: 3f7b01a8a94ec8123cb62b3af2f01df63c214f6266ec9780c0e02313b4966a4d
font_01_sfnt_off00006e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1F 10056 bytes
SHA-256: 52f0bf21ace8a367c963bb989a727ab453e0764b66a664ccc006a56281dfba28

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