Malicious PDF — malware analysis report

Static analysis result for SHA-256 92338492441687da…

MALICIOUS

PDF

48.2 KB Created: 2020-08-30 04:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8d1957a7b4733187499039af5930382 SHA-1: f3bc09c58ead598ff1ce5aa354d7468fe70383bb SHA-256: 92338492441687daafa2d956f516bd325a483e7e5955441c8ae9fd36e7b40977
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious URL identified is https://ttraff.ru/wix?keyword=o+morador+das+trevas+lovecraft+pdf. The document body appears to be corrupted or heavily obfuscated, making it difficult to determine a specific user-facing lure.

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=o+morador+das+trevas+lovecraft+pdf
    • https://cdn.shopify.com/s/files/1/0438/4132/3170/files/abhinetri_movie_in_telugu_hd.pdf
    • https://cdn.shopify.com/s/files/1/0438/0826/0258/files/11958094931.pdf
    • https://cdn.shopify.com/s/files/1/0432/6762/1028/files/dustwallow_marsh_horde_quest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5190/8249/files/grant_hill_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/52239791661.pdf
    • https://static.usrfiles.com/ugd/5bb01c_ea5a48c843174a1da4214b3bd662551a.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bd8a78e42484b0187cfcc6f3640ee6e.pdf
    • https://static.usrfiles.com/ugd/9219f8_931615e91dde47f6a8cb80d9d17ec33e.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_5b05eaebcab14eb09488037ac95ff78a.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/96664748967.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8722/files/jelotakibufi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/xaravi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/construction_submittal_form_template.pdf
    • https://static.usrfiles.com/ugd/837d34_d03ee5e0611d45a0854795059ec58059.pdf
    • https://static.usrfiles.com/ugd/0047a4_c769441f1525466486051b92f1a8d568.pdf
    • https://static.usrfiles.com/ugd/3bca44_24a5c189b3fd468e93b664211efacd61.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076d2.bin
05806212d93da1521ff644cbfeabc79d8a95c83dd72f28ca8b12b6118251c15e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D2 5388 bytes
font_01_sfnt_off00008919.bin
aa125831c6e5dd1fefe716cd8ba4864056e285ae3342a7bcaa01e8d851ec0156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8919 14076 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.