Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b9488b83111f6e…

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 21:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c7eaa1f1a98f3244e549b226143997f SHA-1: 9566013e8c24ad7d767cf6625ac74dc7736f35b9 SHA-256: 69b9488b83111f6e490e3d6cf28773044d6e5bd01e542a27fa55420b04678776
154 Risk Score

Malware Insights

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

This PDF file contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, includes text related to 'Rainbow six mouse lag' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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=rainbow+six+mouse+lag
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0446/2762/4099/files/autoplay_menu_builder.pdf
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/3m_bair_hugger_775_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/lagu_lily_remix_dj_opus.pdf
    • https://static.usrfiles.com/ugd/b8c837_f8247b8008014c66982ddd0acc608df6.pdf
    • https://static.usrfiles.com/ugd/67e251_a3f56bb59845496a884cc18f6c76589f.pdf
    • https://static.usrfiles.com/ugd/b8c837_83b5581846904130aa0d4c35885f5f10.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc2df725d53a4123ae0e48095199d0fb.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/synchronous_motor_drives.pdf
    • https://cdn.shopify.com/s/files/1/0435/3140/3423/files/biomass_gasifier.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/titozibumovepoketewigiram.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_off0000605d.bin
43a247f52e871feefaca71e38f3da07cc860a6fc02862320322409c44de17f2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605D 5216 bytes
font_01_sfnt_off00007225.bin
f265642e5f9930a225c7a543508ad288bf0efb404000d2fd4504e8f6c6790565		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7225 10804 bytes

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