Malicious PDF — malware analysis report

Static analysis result for SHA-256 910cdce85bdad9e1…

MALICIOUS

PDF

45.2 KB Created: 2020-08-10 05:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e0f218b572ebae791613ce15302db78 SHA-1: aa88562fb93492ebc349d57a41d90de8b872670a SHA-256: 910cdce85bdad9e12a9538844d824b9f9ace7654cfd8cc23d372c2f8be806423
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary URL pointing to a known malicious redirector. The heuristic firings indicate this is a link farm designed to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the redirection attempt. No scripts were extracted from this sample.

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=stream+of+consciousness+technique+pdf In PDF document text
    • http://files.nhrealestate.org/uploads/1/3/1/8/131871704/daxanefafason-kubexi-kozagusifizunav.pdfIn PDF document text
    • http://files.smsband.org/uploads/1/3/0/8/130813448/7373853.pdfIn PDF document text
    • http://files.ufequestrian.com/uploads/1/3/1/3/131381109/8291039.pdfIn PDF document text
    • http://files.dominionarchery.com/uploads/1/3/1/4/131453393/fa2f38a1efe4e04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/83991678876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/86391279912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8043/4342/files/sokononarigimuvuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/87041397743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6842/3330/files/gifamivivajubosukusofuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2413/7890/files/59688836050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/tedut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/xedagij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/xovarawawulekapidetul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/xuvepejagara.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DD 5472 bytes
SHA-256: ea633a366259d44a71dc552c9059339123aa979100830f6bf4ca060a216d1d0a
font_01_sfnt_off00007538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7538 10660 bytes
SHA-256: c23a925d2dac2470e89e629bc0348b225740954384c6433d053d4858e65f6c15
font_02_sfnt_off000099a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99A0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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