Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69d234ad37d72d7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-04 11:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baa32d15143cc5351f48055b7f918429 SHA-1: 2fc8c5b0144e0f830db07a982efb432674d54804 SHA-256: f69d234ad37d72d7a67961dab94534e9a60be3b1d2bb8f47a7df1803596fba5f
140 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, ttraff.cc, which is flagged as malicious. Additionally, the document body and heuristics indicate a lure for callback phishing or a tech-support scam, suggesting the user is prompted to call a number or click a link under a pretext. The presence of numerous external PDF links, many hosted on Shopify, further supports a link farm strategy to distribute malicious content.

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=rhythmic%20gymnastics%20training%20pdf
    • http://files.pureelegancesalonandtattoo.com/uploads/1/3/1/4/131408103/waforiroxeda.pdf
    • http://files.absoluteconsultgroup.com/uploads/1/3/2/7/132740623/2484709.pdf
    • http://files.maschmedtdesign.com/uploads/1/3/0/7/130738621/korinovububesar.pdf
    • https://cdn.shopify.com/s/files/1/0434/4761/5649/files/reggaeton_music_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/muzumafude.pdf
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/79389453941.pdf
    • https://cdn.shopify.com/s/files/1/0429/4728/1062/files/algorithme_cours_et_exercices_corrigs.pdf
    • https://cdn.shopify.com/s/files/1/0434/5102/3526/files/morejaxigisi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46287179129.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/harbor_breeze_ceiling_fan_installation.pdf
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/fosuzi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2932/3158/files/68268255628.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/67212504907.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/76825110343.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dfa.bin
32d381615afc199eceb1ffaa7b1eab16fb6f9a9dcd70b75570d27de10efe9800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFA 5644 bytes
font_01_sfnt_off0000810f.bin
be6d6c6e217821ed447ecaccc0d378ddc1b00ab5cc4daad10fa69932b287fb2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x810F 10644 bytes

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