Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce66902adc99c34…

MALICIOUS

PDF

48.5 KB Created: 2020-08-24 03:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cee80e3a0ecb53b0e7e56817b38257cb SHA-1: fd6de0f7403aa5ab30ce4aaf91dcc2af83eeb0e7 SHA-256: bce66902adc99c341d334145e0330d127f28bbca552dcdd40dd0bf7482b66451
136 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text fragments and URLs that appear to be part of a lure, possibly related to a 'whatsapp status video' or a 'd letter'. The presence of a link farm further suggests an attempt to distribute malicious content or SEO spam.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=a+d+letter+whatsapp+status+video
    • http://xajuzo.alisondagger.com/uploads/1/3/2/6/132680813/833345.pdf
    • http://files.helenkaufmann.com/uploads/1/3/1/3/131398377/gujenisunewufir.pdf
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/66733693282.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/95415265581.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29331550606.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/20893290164.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/70876171021.pdf
    • https://cdn.shopify.com/s/files/1/0434/1157/0838/files/81288794818.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/nekejazezavaruvinos.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/29595410368.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/fufidaletorulajomar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/suludoxijoxomolewedu.pdf
    • https://cdn.shopify.com/s/files/1/0447/2753/3724/files/nalini_singh_archangel_s_war_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/20863591509.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_off000073bc.bin
eb12935e34d9e9a76d08f1617ea48f086859e00a21f7e818f5431df12e33047a
pdf-font-stream PDF embedded font (sfnt) at offset 0x73BC 4964 bytes
font_01_sfnt_off000084c4.bin
5015dad1d030aa58ea6a29aafc1e060a369d17b1a37a03822b90c3998f72497c
pdf-font-stream PDF embedded font (sfnt) at offset 0x84C4 9896 bytes
font_02_sfnt_off0000a6c2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C2 4324 bytes