Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc39a62f3c890a5…

MALICIOUS

PDF

38.8 KB Created: 2020-08-31 11:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64a723932fc6f8abe6ce1cedcc0635f5 SHA-1: 8d3890ae728081eea0781d2ccb0e50d0d744fd4b SHA-256: ccc39a62f3c890a5ea4d3a6296336ebac496039ea88b1df766b2b5f681719b9c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body also contains this URL, presented as a download link for a book. The PDF also contains a heuristic for a link farm, with numerous links to shopify.com, one of which is also present in the document body. The primary malicious intent appears to be redirecting users to the ttraff.com domain.

Heuristics 3

  • 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.
  • 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/wix?keyword=intro+stats+deveaux+4th+edition+download
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/excel_2020_advanced_filter_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/mepunoborilufopixi.pdf
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/wogebikakufa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/ladogovedebinadox.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/80013471383.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/8253834744.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/english_bible_niv_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/2015/5037/files/44463041927.pdf
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/55882629682.pdf
    • https://cdn.shopify.com/s/files/1/0428/5267/9836/files/positive_n_words.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_off000059fb.bin
c427dc1e1c4add1802d04d2315feec76cae529dd699042ffa5ac72caa7f02878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59FB 5160 bytes
font_01_sfnt_off00006b93.bin
f06a4b87353ab914b39e3114e351a69ffa54ef94930b6298b74db5eaa09c2060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B93 10264 bytes

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