Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aee751f2a13a907…

MALICIOUS

PDF

44.5 KB Created: 2020-08-29 14:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9a1670ab4b2a36095e9c8d27c6fa847 SHA-1: 191c3448bc07dfbd9bb184657cadf1b208c6b705 SHA-256: 2aee751f2a13a90792118c990849fd196c91c6a533a20157576a53426bfeff49
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains references to 'Mtv guide pro apk' and the malicious URL, suggesting a lure to download potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=mtv+guide+pro+apk
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/vonubido.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/kepusakukekomeragada.pdf
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/aluminium_alloy_composition.pdf
    • https://cdn.shopify.com/s/files/1/0435/3985/7563/files/cionel_perez_scouting_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/samsung_active_2.pdf
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/zilawoboxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4202/9224/files/rutelumexuginiwivitijurug.pdf
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/pixukeboleta.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/tuvepitedenotajoretezokeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/waxavoji.pdf
    • https://static.usrfiles.com/ugd/760101_f7c92a5011034f46a626767fb5dd729a.pdf
    • https://static.usrfiles.com/ugd/136d07_34cc7c3cc9974fa8a4456dcedc587ef7.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1e06005e5c64826bc3d3fd4e5c672fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cd207c692534bf2a75d0e5b8aa3f34d.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/27081414760.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/defoninovo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/arya_mbbs_songs_masstamilan.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_off0000645e.bin
6c163eaca7a993e9aae83d7b6242429bab0d8a1ae11513e5f8dabe05bea6c827
pdf-font-stream PDF embedded font (sfnt) at offset 0x645E 5044 bytes
font_01_sfnt_off000075a4.bin
3eadf3ff1ae85f7a2dd8be852d633ca148c1d24200a16cbd4325889adc5789c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x75A4 2140 bytes
font_02_sfnt_off00007f7e.bin
84e378bea0b8434e4f2bc138fb5e048ad22eb324b1d1226a250e1a2eaedb3e77
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7E 10428 bytes