Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfff51156a280eb…

MALICIOUS

PDF

51.8 KB Created: 2020-08-11 06:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 239d3821c8b292ed0fb3ff5941244f3a SHA-1: a6b6e81c16fc478309f91d7a9e516abd794e061f SHA-256: 2dfff51156a280eb07e9fd952b40cc63ee3edb6e369ef5026ffc359069d3e3f0
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF document contains a large number of embedded links, masquerading as a list of Videocon D2H channel numbers. One of these links, https://ttraff.cc/wb?keyword=videocon%20d2h%20channel%20number%20list%202019%20pdf, is a known malicious redirector. The document also exhibits characteristics of a callback phishing lure, suggesting an attempt to trick users into contacting a fraudulent support line. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=videocon%20d2h%20channel%20number%20list%202019%20pdf
    • http://files.arttecheducation.com/uploads/1/3/0/8/130874231/pemosav.pdf
    • http://files.mvillstyles.com/uploads/1/3/1/6/131606782/1332012.pdf
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdf
    • http://files.sacredheartfc.org/uploads/1/3/0/7/130739379/8857604a0e.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/siwodit.pdf
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/25903457836.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7031/files/86798218993.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/37196574987.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8542/files/wefugasolinedaraf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/gepusegujodogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/sintesis_asam_lemak.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/nafifenupete.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/49177763529.pdf
    • https://cdn.shopify.com/s/files/1/0434/9224/5656/files/4391769086.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/fogilavuzokore.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_off00006e20.bin
1eeda2b6bf9be570b2bbdeb9104b4fed08dd899c83ebe0f530ed1971bfa7f2bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E20 5864 bytes
font_01_sfnt_off000081d1.bin
5b1b6f8f4af4f0966b69167682fbe4378d0e99d8641e21f8f4441ead23460824
pdf-font-stream PDF embedded font (sfnt) at offset 0x81D1 16392 bytes
font_02_sfnt_off0000b3b7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B7 4324 bytes