Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fcdab5aad85d522…

MALICIOUS

PDF

54.6 KB Created: 2020-08-25 16:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06c45f7f9bfe4309290a24e605747e6e SHA-1: 35f9be0a533d84e0ad88ef88757cd32d165d2598 SHA-256: 8fcdab5aad85d522d7ad399ed411aaa7671de78f455ca56bf7dcfefa89db1f85
150 Risk Score

Malware Insights

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

The PDF contains a link farm with 16 external PDF links, many of which point to shopify.com domains. One of the primary links redirects to a malicious URL on ttraff.com. This indicates a social engineering attack designed to lead the user to malicious content. 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=altered+form+giratina
    • http://files.hampshirepaintprotection.com/uploads/1/3/2/6/132695438/rinotonuremutig_barerotamib_lokonexofowif_daselo.pdf
    • http://dixojek.brookebauerboutique.com/uploads/1/3/1/6/131606289/4502308.pdf
    • http://kurebade.history-and-philosophy-of-physics.com/uploads/1/3/2/6/132681352/a42384f2.pdf
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/25560703108.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/86131492121.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/tivejesadezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xugifewelogukepebokiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/steel_structure_design_calculation_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/povumad.pdf
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/tejikivapojemamupabix.pdf
    • https://cdn.shopify.com/s/files/1/0430/3280/5527/files/tomonexoziname.pdf
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/lemewofa.pdf
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/lufazofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/25245402393.pdf
    • https://cdn.shopify.com/s/files/1/0435/9979/0243/files/duvusogorala.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/40008907259.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_off00006ed0.bin
0bfe5d3580c279faeef8f382571fb78b1eaf283983d3ebb698bece820f4fa413		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED0 6772 bytes
font_01_sfnt_off000085ba.bin
02dbb680787059d14570b979188746aca8ae09cfeab92edfd4b1323f22e7ff91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85BA 5036 bytes
font_02_sfnt_off000096b5.bin
a6b9034c23f8511cc3a480e9c54c7f61026239e52166d2b034c84e48055a90ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B5 6436 bytes
font_03_sfnt_off0000a7c7.bin
da3c98aceca8e604c4c73cb00852a56ec686ebf7cddbc997f2bb10d3b450abdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C7 10376 bytes

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