Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e42febc6b138a2e…

MALICIOUS

PDF

38.3 KB Created: 2020-07-28 06:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8a980b4808073faa5c374477a467f3f SHA-1: 6808430d2db93fca4af01291abba355443f04f9b SHA-256: 0e42febc6b138a2e64ae193c811662a2ea6610b0bc77b28ce6d995ca9afedbf3
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to redirector infrastructure designed to lead users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a deliberate attempt to create a link farm for SEO-based phishing. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=colors+tv+serial+song++mr+jatt In PDF document text
    • http://files.robinfarmer.com/uploads/1/3/1/3/131380627/78c412e7.pdfIn PDF document text
    • http://files.stalbanroe.org/uploads/1/3/0/9/130969708/rirobedo.pdfIn PDF document text
    • http://files.thewardrobecurator.co.uk/uploads/1/3/1/4/131453527/jemirimaj.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/1/0433/8909/1998/files/laduvizopuvulaferat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/simiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/kuvarifuxivisupif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/vewujoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9242/7430/files/63372941849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/41784732347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/71068421541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/94509744687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1139/1135/files/vifavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/zezerirovibiwusor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/poralonamenenurapanod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedepisolutiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/40426846318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/katagabejedubidosowawob.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 4

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_off00005920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5920 4952 bytes
SHA-256: e9704818f7b34f5dd98e3051ee15e54f088eadc4f47adc94817a087f09bb4ff3
font_01_sfnt_off000069e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E5 10008 bytes
SHA-256: 8671b66184eb62d5966d1af0a9aea1c00e96261fb70c68e747b940afe982a7a1

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