Malicious PDF — malware analysis report

Static analysis result for SHA-256 db643ef6d07e8e7d…

MALICIOUS

PDF

57.2 KB Created: 2020-08-20 09:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd0eb58795193739d7605eda133f19b5 SHA-1: 9d18d3caed109509d7b9c648ee5a989c2458e91b SHA-256: db643ef6d07e8e7de4b60436e4157a9850733145fa078a77afd0d83da1bec6b5
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=mehndi+rachan+lagi+akshara+song'. This indicates a likely phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.com/pify?keyword=mehndi+rachan+lagi+akshara+song
    • http://files.crushed2restored.org/uploads/1/3/1/0/131070393/perilove.pdf
    • http://files.hiemstragardens.com/uploads/1/3/1/3/131380558/vesur-monidi-kobatikezika-bozezidageroti.pdf
    • http://megetu.nwpwellness.org/uploads/1/3/2/6/132695829/9909082.pdf
    • http://files.dogtownpestcontrol.com/uploads/1/3/1/3/131380841/9182656.pdf
    • https://cdn.shopify.com/s/files/1/0435/4480/5525/files/74087631199.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/32147311855.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0431/0129/0650/files/rodenubexud.pdf
    • https://cdn.shopify.com/s/files/1/0437/2076/9685/files/acta_constitutiva_sat.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/fizefezejujafatafasojodi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8864/files/business_plan_template_south_africa.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000590a.bin
0fba5532e2a47d0a821506325be14577c28a005902e22ff1270090b38a9db97b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590A 5268 bytes
font_01_sfnt_off00006ae3.bin
92fa5d29d7e0afc0160b0e03e8e53d9ace27c718d17a6e58377145117345d2e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE3 7508 bytes
font_02_sfnt_off00007ef6.bin
be75fca1e287beec85388947681351517a42064445ca3b2d93f2854a493a0dbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF6 14560 bytes
font_03_sfnt_off0000ac4d.bin
b3f59738f749f94ad98604bfa8c6bde6480348686286ff6862ae4c937bc88857		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC4D 17320 bytes
font_04_sfnt_off0000c564.bin
b1dc10f896e7557e06d6326abeb55537ba9b8ca32698865f370f0ea0ff969eca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC564 4820 bytes

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