Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d9b95049dbf6e7…

MALICIOUS

PDF

46.6 KB Created: 2020-10-02 10:07:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1d0a048f733a3254cb97d4492f884fe SHA-1: 9822a23f195f33b6a3891a6fd2b6dff9494445da SHA-256: b0d9b95049dbf6e78f41cb7136369a285548a9e7b5b95b2df08bdfab14f16e00
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link to a known malicious redirector, ttraff.club, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the target URL and appears to be a lure related to a synonym search. The presence of numerous other links to external PDF files, many hosted on CDN platforms, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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.club/pify?keyword=synonym+for+self+satisfied
    • http://files.bhawanimaa.org/uploads/1/3/0/7/130739648/632af4fa.pdf
    • http://puxaz.regenerateyourauthenticnature.com/uploads/1/3/0/8/130814397/88da22143.pdf
    • http://dijeti.schihei.eu/uploads/1/3/1/3/131379605/b5e9cd491865.pdf
    • http://files.cghcollectibles.com/uploads/1/3/1/4/131438329/2207687.pdf
    • http://fupawat.belantine.com.au/uploads/1/3/1/8/131857363/468eab66e4e368b.pdf
    • http://files.net.fruklas.com/uploads/1/3/0/7/130739457/481308.pdf
    • http://raluwo.artscapelebanon.org/uploads/1/3/2/6/132695351/lafawepixid_fesusolem_sukujesowiw_sawow.pdf
    • https://uploads.strikinglycdn.com/files/a8a530ec-99c3-46d9-aef5-374cc876691d/vatijuzabiv.pdf
    • https://uploads.strikinglycdn.com/files/daff9951-8771-4b68-840f-a45db22b7f30/wiwajijenikuwes.pdf
    • https://uploads.strikinglycdn.com/files/4a60c3c3-3078-4199-a0a7-1d3d867b24f5/gajunevobijuv.pdf
    • https://uploads.strikinglycdn.com/files/43aea424-b9cf-4266-824d-4510d2baf2fb/rujul.pdf
    • https://cdn.shopify.com/s/files/1/0483/8673/6286/files/pixewobavupix.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/peshawar_nights.pdf
    • https://cdn.shopify.com/s/files/1/0497/8468/4706/files/long_beach_street_sweeping_schedule_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/2011/4344/files/fly_gps_apk_new_version_download.pdf
    • https://cdn.shopify.com/s/files/1/0482/6762/4603/files/xobigabivadimukowafosa.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_off00006a6f.bin
25e0dd0002864754915ee3d13bf5178f42ce5cb1f997e3aceb6a66d8f4698528
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6F 5048 bytes
font_01_sfnt_off00007b72.bin
5c28ebcca7d831a47df31f275fd907d6c489c3fcbf0e04e967cb3a79451018de
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B72 10324 bytes
font_02_sfnt_off00009eca.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECA 4324 bytes