Malicious PDF — malware analysis report

Static analysis result for SHA-256 f774d532d26db6bd…

MALICIOUS

PDF

43.6 KB Created: 2020-08-20 21:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8b0d931ce45f073a20c0efecd3e1b4f SHA-1: f552887608288bb82e3621fe3e4396fdaf0f75ef SHA-256: f774d532d26db6bdcf2efb21fa515fb48c65e5ab2b1514f4616044ae7535b926
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that lead to a known malicious redirector, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Borderlands 2 mods xbox 360' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing further supports this. 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.cc/pify?keyword=borderlands+2+mods+xbox+360
    • http://files.cameronbaskin.com/uploads/1/3/1/4/131453214/zulinadidokodi_vazivu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4032/4256/files/xuzulexowi.pdf
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/39670880461.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/68591651467.pdf
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/jeferetozatadifor.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/nemowavogisitixewaruru.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1320/files/simile_metaphor_personification_hyperbole_irony_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/botazijezalenezigobaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/durogigemutiwamixaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/template_powerpoint_modern_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/85880807055.pdf
    • https://cdn.shopify.com/s/files/1/0450/3692/9188/files/vopimefip.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/
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/botazij

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b3b.bin
b58a6f65340bae2cbc034228f15d2653d8f5751cb702eae5cdce7d95cbedeb3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3B 5820 bytes
font_01_sfnt_off00007eec.bin
79cebefa06694a3bfd4bde83c7e6c8f46fa9a1dc33af4b4dcb807783b62a49a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEC 10128 bytes