Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf8999ba73003e42…

MALICIOUS

PDF

44.9 KB Created: 2020-08-24 15:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11fecd1ef5ae5c4d31695945c88d90dc SHA-1: a47175b6abec378b399fbf0d0033bfb9bf6b3515 SHA-256: bf8999ba73003e4272bcb6673494b500ad20b493ccb7dd8b4f72ec30a7be25c7
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link to 'ttraff.cc' which is associated with credential harvesting. The document body and heuristics indicate a lure for MFA or one-time code harvesting, consistent with phishing campaigns. The presence of numerous external PDF links suggests an attempt to create a link farm for SEO poisoning or to distribute further malicious content.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.cc/pify?keyword=cara+mengisi+e+reporting+tax+amnesty
    • http://files.babybluebeebunnies.com/uploads/1/3/0/7/130738875/103a6b895.pdf
    • http://files.baycollisiontowing.com/uploads/1/3/1/8/131856158/gezowujururofif_kefomereba_durutepez_gizibuj.pdf
    • http://files.ladypatriotssoccer.com/uploads/1/3/0/8/130813701/ed0dbb99f9b10b.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/48350250383.pdf
    • https://cdn.shopify.com/s/files/1/0459/0531/3946/files/confrontation_matrix_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/lejubenerokazibunuli.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0796/files/77608172636.pdf
    • https://cdn.shopify.com/s/files/1/0433/5003/2549/files/jomesejilimirapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/54409232160.pdf
    • https://cdn.shopify.com/s/files/1/0435/6702/2239/files/nenudeva.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/employment_application_form_word.pdf
    • https://cdn.shopify.com/s/files/1/0439/3671/0824/files/gipinuxabodoxojoxodikojaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/4070/1606/files/car_value_guide_perth.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_off00006578.bin
a4868d2d470420df59b5b3d73f83748ffcb13fb51a0c93a3393fa46f5995cb15
pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 5088 bytes
font_01_sfnt_off000076b6.bin
babab4cd50161f9c1a825defd8d6f24955d48238aee9fc5c5218e62a05a067d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x76B6 9832 bytes
font_02_sfnt_off00009865.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9865 4324 bytes