Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad977f368fad1bf…

MALICIOUS

PDF

38.7 KB Created: 2020-08-23 00:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48d5121de431d49880188f1d05864e2b SHA-1: aaa9501c09fb03503af51e5fd17681288d58f0f0 SHA-256: 8ad977f368fad1bfbb892c1f90aa71f071b62394dcf378d4bbb449cdbcc11c4b
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=camara+icsee+manual'. This indicates a phishing or social engineering attempt to redirect the user to a malicious site. The document also contains a large number of external PDF links, many hosted on shopify.com, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.
  • 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=camara+icsee+manual
    • http://files.stazkoassociates.com/uploads/1/3/1/3/131378771/7717719.pdf
    • http://lalej.spiritofaustralia2.com/uploads/1/3/0/7/130739113/6054361.pdf
    • http://files.miltonmurray.org/uploads/1/3/1/6/131606644/nelemilor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/mulukejilop.pdf
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/wejusuxajipuxabom.pdf
    • https://cdn.shopify.com/s/files/1/0433/2804/5209/files/35161623978.pdf
    • https://cdn.shopify.com/s/files/1/0466/2702/9157/files/18078802017.pdf
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/79249835076.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/ronoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/24155178354.pdf
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/file_size_time_calculator.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_off00005c32.bin
e9675ddb8775f01a54f8fa8e3ef4800906210d2808c99972917717f553b5d6d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C32 4848 bytes
font_01_sfnt_off00006c8f.bin
9f2da6bc774044e694dd066c5c7a27155add40d7352377950e440d3d5aa2b079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8F 9944 bytes

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