Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8b316586606633…

MALICIOUS

PDF

44.9 KB Created: 2020-07-29 15:05:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 917af01454700955095ff4129fc6b6e5 SHA-1: aedea2b9a8c9ca619d087474b1415251f317ba9b SHA-256: 3a8b3165866066338c18464697c6599dbf6434f1fd28617204b0c3b4a871f7b8
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a known malicious redirector. The document body, though heavily obfuscated, appears to contain keywords related to 'abuse' and 'definition', suggesting a lure. The presence of a link farm heuristic further indicates an attempt to drive traffic to external sites, likely for malicious purposes such as phishing or malware distribution.

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=definition+of+abuse+pdf In PDF document text
    • http://files.jaspreetsran.com/uploads/1/3/1/8/131856271/zekitukerafir.pdfIn PDF document text
    • http://files.farmdalehawks.org/uploads/1/3/1/4/131482939/7963391.pdfIn PDF document text
    • http://files.shakespeareonclark.com/uploads/1/3/1/3/131379650/tonetagididizi.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/1/0435/7767/1843/files/86773022156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/kiwufopibazuveto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/famofiwig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/piviwuvireperusaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6117/4687/files/83864216230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/fabokabewarelifisavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6707/9830/files/darux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokadexowigexavutezirero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/lavepisolona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/dupikabum.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 5

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_off0000723d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723D 4928 bytes
SHA-256: aef162f2eca8668ae7e9d99c183fa059de23c72d0efc63fc20ccb88765709d6a
font_01_sfnt_off00008309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8309 10444 bytes
SHA-256: 4e8d58000297ec50a528fac70b03c5058bdd35fa2356d1ed9ed9f6b6be3c5abb

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