Malicious PDF — malware analysis report

Static analysis result for SHA-256 815fe7a7ab643008…

MALICIOUS

PDF

32.9 KB Created: 2020-08-24 08:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd0e587b8a202b2a05888d70ec39b229 SHA-1: 7edb3c25e3d87eaf2c2c173ae684b077c53e0a2f SHA-256: 815fe7a7ab6430089b87dce41ae5b8dd511564bcc6966e58ac1b81a9cbec2efb
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to redirectors, including one identified as malicious. The document body, though heavily obfuscated, contains references to a malicious redirector and numerous links to external PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=angles+in+polygons+exploration+answers In PDF document text
    • http://files.asweetpetitedesigner.com/uploads/1/3/0/7/130739971/pogeg_zajed_favuzizu.pdfIn PDF document text
    • http://files.oksart1.com/uploads/1/3/0/7/130776350/paragiwonida.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/1/0431/4421/6727/files/pamukojibamilowepolezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1537/files/16451889916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3031/files/93630602196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/vakarokodejakofudimize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/bexoxosozipuwot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/gisevowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4902/4669/files/fiwajopusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7729/4485/files/where_do_i_begin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9849/6412/files/bisamajedipalusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7977/7945/files/fomokiromov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/kukam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2409/7175/files/niworamolivo.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 2

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_off00004495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4495 5236 bytes
SHA-256: 62b6fe085da5a18632919e7f0601445e6d2edf29ce53dafa7f9b22937704c429
font_01_sfnt_off0000568f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x568F 9500 bytes
SHA-256: 8e75238503818d6c8f99cc433564c611f28b9e0e134e1f442d2f2419dd59e1db

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