Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c07ac10f5f91ba…

MALICIOUS

PDF

42.3 KB Created: 2020-08-26 10:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd6d3c81d3a2c6b2ae82424e1128506b SHA-1: 72f9c96ed332c89f6e2a0085c0007178db86dbc9 SHA-256: e4c07ac10f5f91ba7834065aeb5381fd799afc0813489dc322ed3b6e4674f268
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, and another flagged the document as a link farm. The document body, though heavily obfuscated, contains references to a Sony Xperia phone and a URL that appears to be part of a lure. The presence of numerous links suggests an attempt to direct the user to potentially malicious content.

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=sony+xperia+xz3+compact In PDF document text
    • http://niziri.thelellowfoundation.org/uploads/1/3/2/3/132302868/d7af05eacc14.pdfIn PDF document text
    • http://files.friendshipfiles.com/uploads/1/3/1/4/131407138/2337597.pdfIn PDF document text
    • http://files.gunkhoney.com/uploads/1/3/1/4/131407194/1210648.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/1/0435/2134/3647/files/wivaretobafijimane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8688/8612/files/bikos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kawovuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/dasojakesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/1353635651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/sawim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/lopedopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/elementary_statistics_9th_edition_bluman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/vuripewupapubinezamoba.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_off0000642e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642E 5356 bytes
SHA-256: 5027a6ac146c0be6f889823ab556ccebfef02c413f94e8592a18c5ada0b96083
font_01_sfnt_off0000765f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765F 11520 bytes
SHA-256: d568708a0efc55138c67f4b65ac0fb4ba993173f499c4f3b36218902ef524532

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