Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06060d778096cd8…

MALICIOUS

PDF

47.4 KB Created: 2020-08-30 21:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07b2a9acbc083be02be592d5e382fd79 SHA-1: fa89fc80d4cebc73aec84d9fe029f01c1c3ee137 SHA-256: f06060d778096cd8d97e8af49694864b5fcf14b86ce7d0b953db1a451873144b
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the URL and text that appears to be a lure for a 'bluetooth kit'. The presence of a link farm heuristic further suggests a malicious intent to drive traffic through potentially harmful sites. The ML classifier 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/wix?keyword=bury+cc9056+plus+bluetooth+kit
    • https://cdn.shopify.com/s/files/1/0433/9102/5303/files/sap_workflow_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/1890/0888/files/integrated_bsc_bed_form_date_2019.pdf
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/9946456041.pdf
    • https://cdn.shopify.com/s/files/1/0465/5097/4614/files/93552144965.pdf
    • https://static.usrfiles.com/ugd/ba3095_4861a1c6d98c4be083e872265c3abbba.pdf
    • https://static.usrfiles.com/ugd/d1c05f_ad237ca94f7e4056865d9fcb7c6e6eb6.pdf
    • https://static.usrfiles.com/ugd/b8c837_578e1a02e0f04588b9842d27f1baaa0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c54bd2ae6154264994c4dc68574f727.pdf
    • https://static.usrfiles.com/ugd/565485_e1a770dcc4f04887bfd165a3190bd8c5.pdf
    • https://static.usrfiles.com/ugd/b7ed05_0887977ef99b4b0a99b9ee3ce01ddcca.pdf
    • https://static.usrfiles.com/ugd/16a96a_7b71ed5716934b8284f6d967b2fa6e54.pdf
    • https://static.usrfiles.com/ugd/b4a829_2566b7929aae4ab3885f10efbf403b5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_175f96dd976f40d58580415c47c74b16.pdf
    • https://static.usrfiles.com/ugd/b8c837_e03b998dd02543e581a86a6f2010f241.pdf
    • https://static.usrfiles.com/ugd/91e123_3d82c0387fbb4268a4961616948ce5cb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000580a.bin
ad39dc7330494ad7b27bd724f6eec2dc5223db7bcb48e3fa966450b29c83fb62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580A 5740 bytes
font_01_sfnt_off00006b8b.bin
36cf75a1737ec7132ffaa3c4ca1b2b23ca9dc29caf0e34f09d580343f2921cd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8B 14548 bytes
font_02_sfnt_off00009954.bin
d6aeca2d71d065aeba00d03c50d672d3ba05f186ce264dc70760bb3990d11dd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9954 16632 bytes

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