Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d2d6538b8d0bfef…

MALICIOUS

PDF

44.8 KB Created: 2020-08-18 17:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfbb4d1a150a833b48c6216e37747587 SHA-1: 6d956a001ebb8fd0978813daf7104af0d870525a SHA-256: 1d2d6538b8d0bfef803db1ae7036ce8d68c5f7338973673cf14f5ad867db0ec4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'bulk rename utility pdf manual' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also hosts a link farm, indicating a potential SEO poisoning or spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=bulk+rename+utility+pdf+manual
    • http://files.aboverepair.com/uploads/1/3/1/4/131438708/raluni-libobesexirela.pdf
    • http://bezon.allison-kiefnerburmeister.com/uploads/1/3/1/4/131452841/rebimizaxelito.pdf
    • http://files.tdays.org/uploads/1/3/2/7/132740541/6c1a4cd.pdf
    • http://warozesep.afsardmdlab.com/uploads/1/3/2/8/132816165/7404495.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/fapevu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/kamevimupugeburixinezuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2436/files/bodyguard_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/guwom.pdf
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/chronic_obstructive_airways_disease.pdf
    • https://cdn.shopify.com/s/files/1/0438/8565/8280/files/14621327189.pdf
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/nutojebe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/xudirujudonokesemajalu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/dizziness_aafp.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_off0000645a.bin
248b30a7e5b62f3327926e223341bd2b7d8c011d5340d6c678921d347898cf4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645A 4996 bytes
font_01_sfnt_off00007542.bin
c38e021a0c49859ebe5bcd2e13f30e66fa1fded4eab50d380e1934f3d52fefc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7542 10220 bytes
font_02_sfnt_off000097db.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97DB 4324 bytes

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