Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e343780498aef8…

MALICIOUS

PDF

46.8 KB Created: 2020-09-01 08:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9923b189bf98daeeaef1bcae88c7b7b2 SHA-1: 299a8717caca8fbef79b3a53fc210b697667903b SHA-256: 14e343780498aef8544284e7c2492c5afddd61a49f5277b9499b96e4cfe50958
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The primary URL, https://ttraff.com/wix?keyword=genetic+algorithm+implementation+in+java+pdf, is identified as a malicious redirector, indicating the document's intent is to lead users to malicious infrastructure. No scripts were extracted, but the presence of numerous links and the identified malicious redirector strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/wix?keyword=genetic+algorithm+implementation+in+java+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1935/3767/files/19690439970.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/brucellosis_in_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/lamisu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3840/6806/files/98046163783.pdf
    • https://cdn.shopify.com/s/files/1/0434/5819/9719/files/ramidomexilezajevuse.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3126/files/gejif.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1446/files/tifavomidegiwomudubidi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6315/files/28983150518.pdf
    • https://static.usrfiles.com/ugd/5b9a87_ee292390ca9041fab0d4962434dcd04a.pdf
    • https://static.usrfiles.com/ugd/24853a_f1f78edd32f1475d817de09e4dd35c5f.pdf
    • https://static.usrfiles.com/ugd/d94ae5_aac6e388e2114dabb3076b593fbb4b5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_047b736365034e24a6aa527cd62a058b.pdf
    • https://static.usrfiles.com/ugd/a44510_c1ab5f99bb584e7a9971f960feeb2f4c.pdf
    • https://static.usrfiles.com/ugd/eda9ba_0390cf0f9ff44a4f9012daab8cdfc100.pdf
    • https://static.usrfiles.com/ugd/b8c837_107871a511b54473afb38051ef128d10.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007767.bin
81cdcadb6a29e58f9fdc21839782f10cc18d1b460bd62b980381bbcbea101933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7767 5560 bytes
font_01_sfnt_off00008a3a.bin
dd027dcae6bd23148171e6c8d7ecfed79aec3ccd1752d976e110766274c1192d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3A 10596 bytes

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