Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eab45fdc3cb144f…

MALICIOUS

PDF

47.0 KB Created: 2020-08-04 09:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f8ad0d0fb9300ed85421e5c564c7651 SHA-1: a06b1679ab6374d8206862bba1714df09bbb64c0 SHA-256: 7eab45fdc3cb144f54ca27a44c66ac195bf9ee37a78ac1f069c39a12e3f74309
154 Risk Score

Malware Insights

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

This PDF file contains numerous links to external PDF files, many of which are hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=atrophic+rhinitis+treatment+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to redirect users to malicious infrastructure. No scripts were extracted, but the presence of a malicious redirector and a large number of external links indicates a likely phishing or scam attempt.

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.cc/pify?keyword=atrophic+rhinitis+treatment+pdf
    • http://files.hopeanimations.com/uploads/1/3/0/8/130814346/8090035.pdf
    • http://files.puriri-wiltshire.co.nz/uploads/1/3/1/4/131436991/xenesadodega_lozaxedevo_libisawerab.pdf
    • http://files.spwrestling.co.nz/uploads/1/3/1/4/131437242/650099339ae6df.pdf
    • http://files.imsarc.net/uploads/1/3/1/1/131164152/59e21829a001871.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/noforagup.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/dolegeminirokulur.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedapefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5751/1590/files/papovifokebaxidowiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/difijogumelumot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2561/2450/files/zulitefutabakawer.pdf
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/3340529019.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/21878823408.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80170273674.pdf
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/morejifuwadelunarenavipud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8861538602.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6249/files/jitarofexi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d26.bin
8973dc335ea0331c4beb90defff1464aecc22d1534b9c44188d171e92d29849f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D26 5140 bytes
font_01_sfnt_off00007e68.bin
4ad17d20229dde2a0e2a25bc06e3989e472bbf7788e754050f871d1178d539c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E68 10140 bytes
font_02_sfnt_off0000a0fe.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FE 4324 bytes

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