Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f8b4b247d44bda9…

MALICIOUS

PDF

53.2 KB Created: 2020-08-02 17:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 042c04bb19fcd982204a513f97ae9d36 SHA-1: 0dcfbb317190c7e9ae10acf5f5e7b1eb80b9e983 SHA-256: 0f8b4b247d44bda91c6514ed7217d774b28b7431948e15dce380db37a1b28ea6
202 Risk Score

Malware Insights

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

The PDF contains embedded links and a document body that mimics a service manual, including a call-to-action to download. Heuristics indicate these links point to redirector infrastructure and a link farm, suggesting a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=2004+bombardier+outlander+400+service+manual In PDF document text
    • http://files.lcpcomicbook.com/uploads/1/3/1/4/131437276/mopurukobano.pdfIn PDF document text
    • http://files.bulacanhouselot.com/uploads/1/3/1/3/131382274/4d3b69b76c6db0.pdfIn PDF document text
    • http://files.padmasherni.org/uploads/1/3/1/4/131437306/dirodederuv.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/1/0428/9835/8432/files/xizujebekox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/24470451299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/92476546300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53741046047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6840/files/31232586354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/wopefosevejoxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/fuzirosibanefimasiwawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/funulapenoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8545/3728/files/46853587826.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_off0000846b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846B 5552 bytes
SHA-256: 92cbaf7003728cdda939bdd90274be353a1c9144284819a93e215c21995e5b38
font_01_sfnt_off00009739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9739 15616 bytes
SHA-256: 4c8d963b9187545d3d7955a8b3aa32c7cad105e203d2c48b482fed28eb847647

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