Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f7b7f55085ba64b…

MALICIOUS

PDF

54.1 KB Created: 2020-08-03 14:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 336fb6e5e39e9cebb61a761a2e3bc85a SHA-1: 0e30ccfec3474e7067f6d2f70a94ddaba64d2c55 SHA-256: 0f7b7f55085ba64b122311504bbb6be5b0858a6eee39fafdf955fd9deceb1f52
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded URLs, including a primary malicious redirector at 'https://ttraff.com/pify?keyword=asmaul+husna+dan+doanya+pdf'. The document body, though heavily obfuscated, also contains references to this URL and other benign-looking PDF links, suggesting a link farm or SEO poisoning tactic. The ML classifier and critical heuristics strongly indicate malicious intent, likely to redirect users to 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.com/pify?keyword=asmaul+husna+dan+doanya+pdf
    • http://files.cubany.org/uploads/1/3/2/7/132710795/834aed57.pdf
    • http://files.globalafricancreates.com/uploads/1/3/1/4/131452958/7653675.pdf
    • http://files.raftandrun.com/uploads/1/3/0/7/130776350/8618673.pdf
    • http://files.ameliahamiltonfit.com/uploads/1/3/2/7/132740665/jodalapesovesu-fapode-pubagezokatade.pdf
    • http://files.harleyeaston.com/uploads/1/3/1/4/131411688/masimoxo-gefinobamozu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/bedupawuvima.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.pdf
    • https://cdn.shopify.com/s/files/1/0434/1586/3463/files/bapepidinavijaxalemijipop.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/zimumokajuvurinisusi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/woxunaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/24131674563.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.pdf
    • https://cdn.shopify.com/s/files/1/0449/5107/7032/files/harvest_moon_gba.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/64119760584.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3788/files/78941835617.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/84700432679.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000a6c5.bin
52de05610183355d35aea342771b76b8c61e25009e633f4a383487bd7c362154		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA6C5 21116 bytes
font_00_sfnt_off000072d0.bin
5ba588ca98ef382a6d43a4a7eb7e1374277a93f59681713e395fbd7405c048b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D0 5276 bytes
font_01_sfnt_off000084a5.bin
c9dbcecf27ef17bcd7f2b03ab0f3f64087e12f5365cd6234f8d729f942a71223		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A5 9908 bytes

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