Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da4eb93deb43113…

MALICIOUS

PDF

63.6 KB Created: 2020-09-03 01:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f17cdf2d51532dd0c851591dcb3d0db SHA-1: ff06269f230e4b8e8427dd05598aeae558e58d88 SHA-256: 7da4eb93deb4311334436e6ebd2634269cbdf898c918dff3e79595797fe2812a
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.link'. The document body, though heavily obfuscated, contains the URL and text related to 'speakers of lok sabha list pdf', suggesting a lure. The presence of numerous external PDF links, many benign but one malicious, indicates a link farm strategy. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

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.link/wix?keyword=speakers+of+lok+sabha+list+pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/cara_membuat_surat_lamaran_kerja_di_hp.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/37473370705.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/pexukujagonuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/la_state_abbreviation.pdf
    • https://static.usrfiles.com/ugd/5f4192_f87ba3046bcb4aefad4cbf4800a04572.pdf
    • https://static.usrfiles.com/ugd/b8c837_574b4fec45da492e8caa4cedde46f2f9.pdf
    • https://static.usrfiles.com/ugd/599026_0ae81379108d4fbcbd75f91877596bad.pdf
    • https://static.usrfiles.com/ugd/dc6899_75b5154b20914d36a04183e91e0e26bb.pdf
    • https://static.usrfiles.com/ugd/74e9cf_aab96f95c9b244fba36db6f9b527fd3b.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/kekovudivikudiwapuguz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/molafakitajavilatoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/kewuzogazilijefu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4881/0149/files/ijoy_bioniq_bluetooth_headphones_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/bishopric_meeting_minutes_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/0214/9540/files/random_int_java.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/sezawuwiwe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000858c.bin
9ec7ac9d8827e923b6b69ea9c7488f0423eeea9272e289c1e421dc02fa153a61
pdf-font-stream PDF embedded font (sfnt) at offset 0x858C 5436 bytes
font_01_sfnt_off000097fb.bin
7badec69977e3cb8e68e9e4288d10ca819b1030f099694ad9cd452337cf3925e
pdf-font-stream PDF embedded font (sfnt) at offset 0x97FB 15848 bytes
font_02_sfnt_off0000c893.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC893 16164 bytes
font_03_sfnt_off0000dde4.bin
bc1f09a9fa5eefe64ed7d1860220fe82f2a1350dc6c7e42a62a43c3a9f51c0e6
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE4 5020 bytes