Malicious PDF — malware analysis report

Static analysis result for SHA-256 e668a5034fd21cd8…

MALICIOUS

PDF

46.0 KB Created: 2020-08-19 09:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b44d8bfa83db79c93619ac96f8ac4242 SHA-1: ae45051be1b32d0534c0d55d565449241a522b8c SHA-256: e668a5034fd21cd89d12ef345df1f93b57f3993244599fac1aeb03cb9a3833ae
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a movie download, which is a common social engineering tactic. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this link points to known malicious infrastructure. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious links. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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=commando+2013+full+movie++in+tamil In PDF document text
    • http://pejibiz.lopatswimming.org/uploads/1/3/0/8/130814124/1b1c796d653c6b.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/1/0434/1917/3029/files/tuberculosis_prevention.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/99073252914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7037/4559/files/bowovaxebavaluwumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/drawing_human_anatomy_giovanni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/neriferatupumuterosesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6231/9518/files/80294015825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5688/2086/files/woxubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/aha_acls_guidelines_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/cyanide_and_happiness_apk_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7218161301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/wovuturinox.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_off000060a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A9 5232 bytes
SHA-256: eb13a62e31125f5b58bf22b3f13bc3329a715b890db8d75b591b5613dff67f6a
font_01_sfnt_off00007270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 10352 bytes
SHA-256: 3912930703d9083a8d445a85ee6ed77d9aaadad0772aac0983c443dd4615027e
font_02_sfnt_off00009617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9617 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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