Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd02b1df70f34cb6…

MALICIOUS

PDF

79.7 KB Created: 2020-08-06 13:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3ab0cf138b83b0f4bf143858360b5cf SHA-1: 42d84c11a0e6400b92d8e75b6e9d4d938e75407a SHA-256: dd02b1df70f34cb65d3f08e691266cf2846c1b77b4e6fb4a6bbeb2e3ba53d6fa
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. The ML classifier also strongly flagged this PDF as malicious.

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=hospital+architecture+plan+pdf
    • http://files.dominickcarlotti.com/uploads/1/3/1/4/131483184/9881140.pdf
    • http://files.hamptoncommunitykinder.org.au/uploads/1/3/1/6/131637056/8391510.pdf
    • http://files.cliffordsclassroom.com/uploads/1/3/2/3/132302894/05009efb04.pdf
    • https://cdn.shopify.com/s/files/1/0437/6923/3557/files/albert_camus_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0441/2129/2952/files/general_chemistry_4th_edition_mcquarrie.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/fowubopejixov.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/maxulixikekarikapizake.pdf
    • https://cdn.shopify.com/s/files/1/0434/6989/7878/files/jozurusumures.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/zesirolirinujedomogagu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/5404153390.pdf
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/48242323787.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/88243665755.pdf
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/harmony_remote_software.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d757.bin
8f544856d96b33757f5b9216c7f8fbcc75ecbdfd2946ec5f1baa3a12b377b247
pdf-font-stream PDF embedded font (sfnt) at offset 0xD757 3408 bytes
font_01_sfnt_off0000e37e.bin
4f343dde04769d2636a1e3d3a08520b627608eff046f449dfbcbc8f4fe260f29
pdf-font-stream PDF embedded font (sfnt) at offset 0xE37E 5204 bytes
font_02_sfnt_off0000f524.bin
6f2eb469eeba1a48f6f5519bd8109351fd6c625b16532f820e5ee310c207280f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 15884 bytes
font_03_sfnt_off000125e7.bin
ec100a33de452d02a5f7290955f784fcfa29a2a317a7f5b8b204f24f9c3fc3aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x125E7 2772 bytes