Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bb86dfef2c606c…

MALICIOUS

PDF

36.9 KB Created: 2020-08-22 17:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 120d35b28257efd0eb3bc31622f9b30b SHA-1: 775ac71b034fa7bc233a013b175feb405360b610 SHA-256: 60bb86dfef2c606cabb3894b4afad7a27938129bc98ecf5a0ab9b78ae6a264c6
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, appears to contain the same malicious URL and other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The primary malicious link is likely intended to redirect users to a phishing or malware distribution site.

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/pify?keyword=acrylic+sheet+dealers+near+me
    • http://files.outsideinstables.com/uploads/1/3/1/3/131383848/d2f22.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/98192990156.pdf
    • https://cdn.shopify.com/s/files/1/0435/5522/5763/files/7447784818.pdf
    • https://cdn.shopify.com/s/files/1/0435/3274/6906/files/bolowogekukinusuxigibike.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/tikufojojix.pdf
    • https://cdn.shopify.com/s/files/1/0433/1972/2152/files/isaac_asimov_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1846/files/musojamunubu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8661/files/neduru.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/saxophone_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/dezizesigafud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/jezof.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4992/files/articles_of_confederation_full_document.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/17491271357.pdf
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/attitudes_and_motivation_in_second_language_learning_gardner.pdf
    • https://cdn.shopify.com/s/files/1/0431/8058/9207/files/d_d_ghostwise_halfling.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_off000051d5.bin
8eb0c6a3776e5f26772372f9cd408b5a9cdcae35d481835d6e017c245fa2ae27
pdf-font-stream PDF embedded font (sfnt) at offset 0x51D5 5268 bytes
font_01_sfnt_off00006391.bin
c917839d895d4f0ea934a6e07e81fdd979c8822055fd72380d159be57eaf03c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6391 10308 bytes