Malicious PDF — malware analysis report

Static analysis result for SHA-256 02060a1832b814a6…

MALICIOUS

PDF

47.5 KB Created: 2020-08-22 15:21:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 326d1d7b9f3be08a4240702ff214f91b SHA-1: 26656220bb2f0e18224f72505776c6443675363d SHA-256: 02060a1832b814a60bc3a4f22e9563717e26d204397dc196b82b84fa49fd07f0
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=balidan+all+song'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one to a Shopify domain. The document body, though heavily obfuscated, contains the malicious URL and references to benign-looking PDF files, suggesting a lure to disguise malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=balidan+all+song
    • http://files.isaacchandesign.com/uploads/1/3/1/4/131483423/xeguz-xobebe-manirejev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/chromosomal_disorders_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/statistical_methods_for_research_workers_fisher.pdf
    • https://cdn.shopify.com/s/files/1/0430/1579/8937/files/asme_standards_for_flanges.pdf
    • https://cdn.shopify.com/s/files/1/0434/4201/2327/files/dotaguriwufulape.pdf
    • https://cdn.shopify.com/s/files/1/0432/4750/1474/files/islamic_banking_system_in_bangladesh.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/kebur.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/72498789134.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/tuberculous_lymphadenitis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/rafeludajogigiw.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_off00006e9d.bin
e627a3c56545959754d9a0c5697da72518bfed70492ab1c9dc12dab70b28846d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9D 4536 bytes
font_01_sfnt_off00007df9.bin
a2e1928eb0d8cc2f99258d104bec16143a0a73136813e30dc4edcdcd735b6eda
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF9 11476 bytes
font_02_sfnt_off0000a3c2.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C2 4324 bytes