Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb6606eaf821e57…

MALICIOUS

PDF

47.1 KB Created: 2020-08-01 07:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5eb4682581af2dfa6be6118347b35e0b SHA-1: 6096ace66f94ea9c2c6dd0112a19cc6fb3ab840e SHA-256: 0cb6606eaf821e57430d250e8795ba2475cda61a53eae05ee5ee3498e27c4911
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Postgres list databases' and includes the malicious redirector URL. The presence of many external PDF links suggests a link farm or SEO abuse tactic to distribute malicious content.

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=postgres+list+databases In PDF document text
    • http://files.nicoleona.com/uploads/1/3/1/4/131452799/97649395683476.pdfIn PDF document text
    • http://files.sligogreenway.com/uploads/1/3/1/4/131437093/8362627.pdfIn PDF document text
    • http://files.hillviewchristian.org/uploads/1/3/1/4/131483317/5250584.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/1/0428/2109/1484/files/jasiwekebutese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/zutaxutejujutizutuxazujib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/nulogurifoxex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotedijulukamani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0813/files/rovisoruxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/apple_social_responsibility.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/mutorazazamakog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/xigomoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2952/files/80158069981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/83907793839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/30780488254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/72443872643.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000063ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EF 5132 bytes
SHA-256: ad5a1b6143c38f6ef84b0ddf34583343dc817086e59596c7f2950d8210e9dbcd
font_01_sfnt_off0000756b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756B 10916 bytes
SHA-256: 144c999f231bce4af59332c922ab1d879388660beb8afb14bb8a2bf1a62575f3
font_02_sfnt_off00009aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA8 16060 bytes
SHA-256: 1a51fac5cecc05d5f0a5d3b698ffe240ccab470cdba6a823ba27c6c2a12c20dd

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