Malicious PDF — malware analysis report

Static analysis result for SHA-256 065068da6b2c944a…

MALICIOUS

PDF

44.5 KB Created: 2020-08-31 05:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43674c3e94b83feed28863572391a283 SHA-1: f671d41ce7131690ad6c4637dbdf7926f072aa9a SHA-256: 065068da6b2c944aba020097ec836e3d3891794b8a525994b0f2aac363491d85
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.ru/wix?keyword=minecraft+araba+modu+indir+1.12.2. The document body, though heavily obfuscated, contains this URL and appears to be a lure for downloading Minecraft mods. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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=minecraft+araba+modu+indir+1.12.2
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b65acf_24ac7c1259514ba2bf1e805a2fd9cad0.pdf
    • https://static.usrfiles.com/ugd/685707_09291b94beb34f0bb577945ff704a835.pdf
    • https://static.usrfiles.com/ugd/1decf9_c11621a24456481fabcc19c7a0615f57.pdf
    • https://static.usrfiles.com/ugd/33ab24_990138cbbcda428588ebfdb1080df030.pdf
    • https://static.usrfiles.com/ugd/b4609a_3fa35fc4fe044ce7a064abcbeddfbacd.pdf
    • https://static.usrfiles.com/ugd/df73ab_5af3547f0a78424e9462e95bfc396cfd.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/zutusale.pdf
    • https://cdn.shopify.com/s/files/1/0441/2584/7704/files/character_analysis_questions.pdf
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/autodesk_trueview_2016_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/cellulosic_fibres.pdf
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/90389437580.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/standard_gauge_sheet_metal.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e0c.bin
2f189f7cb5fa63b260c8c274de6ec16cfa89b7b4a6032a5d1cb094061d26d343
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0C 5320 bytes
font_01_sfnt_off00006016.bin
5d27708235cb9732924147412fced07837f307ed5671538ad772af8ff9878bb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6016 16108 bytes
font_02_sfnt_off00008ed0.bin
6f41d85279102efce3c4bd26fddb767baf9b68a4f55e239fba9bedc2a2d3b953
pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED0 16064 bytes