Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39fd7fbea6295de…

MALICIOUS

PDF

48.6 KB Created: 2020-08-24 15:20:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbba4208b64b1a4dc41e1f3abcc3df5e SHA-1: e6b380226ab5803010228389532ed80340adf5a3 SHA-256: c39fd7fbea6295deab2adc62f325f59e819cce4dbf9506f4e8bb956dafb179ab
140 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body, though partially corrupted, suggests a lure related to 'call center quality assurance training'. The primary malicious URL, https://ttraff.cc/pify?keyword=call+center+quality+assurance+training+pdf, is a known malicious redirector. The presence of numerous other PDF links, many hosted on Shopify, suggests an attempt to obscure the final malicious destination and potentially leverage SEO tactics.

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/pify?keyword=call+center+quality+assurance+training+pdf
    • http://files.biophysical-imaging.com/uploads/1/3/1/6/131637257/gogob.pdf
    • http://pomav.thepeterboroughparkwayclubs.co.uk/uploads/1/3/2/7/132740285/sepodinapipiwinifi.pdf
    • http://files.rhondamills.com/uploads/1/3/0/7/130776027/d24bb7ae.pdf
    • http://files.lashondabarnett.com/uploads/1/3/1/1/131164113/5184486.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/ruwolefetonuva.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/fufokozun.pdf
    • https://cdn.shopify.com/s/files/1/0437/4665/6408/files/channels_of_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/56068749827.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/alone_movie_in_tamil_hd.pdf
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/11_algebra_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/4550/9537/files/systema_manual_by_major_komarov.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/nuxozofujujariwejibosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4041/5644/files/80696185162.pdf
    • https://cdn.shopify.com/s/files/1/0440/7269/8006/files/vicon_disc_mower.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_off000071b8.bin
fb49f33f161932fb577b62b760b4827613f443e4fbec78371ee7a1b68dcf8584
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B8 5344 bytes
font_01_sfnt_off000083f1.bin
8a0e543933475888de46b6775b46c5321a3992d6b6842bb0110a987793fbfe2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x83F1 10396 bytes
font_02_sfnt_off0000a72f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA72F 4324 bytes