Malicious PDF — malware analysis report

Static analysis result for SHA-256 293f5aeba444c406…

MALICIOUS

PDF

44.7 KB Created: 2020-07-26 23:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d62be943d31a9d5488bcbb061c27766c SHA-1: c9d62b30347fb57ba428383f4f7a9397d9264fb4 SHA-256: 293f5aeba444c406339af4bb894c2e397f50d4d774574419deb4efeaf2d585bc
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure for statistical resources. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate a malicious link farm intended to redirect users to harmful sites.

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=basic+statistics+equation+sheet In PDF document text
    • http://files.donalcox.com/uploads/1/3/2/8/132814958/7917936.pdfIn PDF document text
    • http://files.theolivebranchfrisco.org/uploads/1/3/1/1/131164275/4663717.pdfIn PDF document text
    • http://files.lindasdesignersgroup.com/uploads/1/3/1/4/131407028/245a2db.pdfIn PDF document text
    • http://files.morethansoulfood.net/uploads/1/3/2/3/132302973/timuf.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/1/0427/6033/9623/files/42640543714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8125/2508/files/63051838294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9534/1723/files/rabetidoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/roroxebupajusikopuzij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/74298707273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/51371571026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/36500875397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/wuzirawogikawonubode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/tufog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/94667012651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xawifakupubegezixezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/xosexonuxewoxanatiwawojul.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_off00007383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7383 4816 bytes
SHA-256: 245bb45a6957c8345098caa54dcdfd34083312e5f28d17165dc316bf2dd6d0da
font_01_sfnt_off000083d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D5 9792 bytes
SHA-256: f90e4e408ca04738d846c3bc6a364464f78229ae32b1ca05dc8122399b586cdc

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