Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9882c4bc263c5c…

MALICIOUS

PDF

46.3 KB Created: 2020-08-29 14:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b15006b78b9fcbe268a1944585cb559c SHA-1: a08cf80b5f85556d4b949623aa7400d82bab3d68 SHA-256: 5e9882c4bc263c5ccc279c951e3ee2d222daffeb94d05abd7c492b922ec1ed5e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a primary link to a known malicious redirector at `https://ttraff.ru/wix?keyword=terminal+lance+the+white+donkey+pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into visiting malicious infrastructure. The presence of many other Shopify links indicates a potential link farm or SEO poisoning tactic to obscure the malicious destination.

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.ru/wix?keyword=terminal+lance+the+white+donkey+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3485/9930/files/62720858567.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/32792670048.pdf
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/xoditisuxopejon.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/86550655466.pdf
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/intermediate_algebra_sullivan_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/african_society_and_culture.pdf
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/signs_and_symptoms_of_depression.pdf
    • https://static.usrfiles.com/ugd/b8c837_e457ef8d9ca54f368d538eec07eb97c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_9861b9e5a22748e091115c8e140b1ca8.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb35b38e8ec64f9eac2e261c1f71f2e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d9e811fb8cb49e3890f569247305d9a.pdf
    • https://static.usrfiles.com/ugd/b8c837_c61a0aee4fac4d42a7e57be25f962646.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd1e4f8b0cc8404992ac2d2a912f979b.pdf
    • https://static.usrfiles.com/ugd/b98abb_6fef3b10b9014f2093a46a7d9c6dc0d3.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_off0000763d.bin
f123b9ad61093945f9f0ef56ab1fc0b9a00c6dee4ebcc9dab37a2c4b72231413
pdf-font-stream PDF embedded font (sfnt) at offset 0x763D 5424 bytes
font_01_sfnt_off00008895.bin
45bbe49284fe877bcb724affca25736f513b3187144884c1b38c6ab2ba2ae722
pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 10528 bytes