Malicious PDF — malware analysis report

Static analysis result for SHA-256 fede037473b7d834…

MALICIOUS

PDF

47.1 KB Created: 2020-08-21 19:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab4b0d29c99141c4f3769b0512d822d7 SHA-1: ad34ced28c2165d7d62043fdca1f5661f76e7aa5 SHA-256: fede037473b7d8343206e3635d553499b14fba94100cba79946a354faf8a0d46
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is further disguised by the document body's claim of being a 'Web application security policy template'. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive document title and a malicious link.

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.cc/pify?keyword=web+application+security+policy+template
    • http://modorake.coldchocolatemusic.com/uploads/1/3/1/3/131383541/4327226.pdf
    • http://files.katemarshpoet.com/uploads/1/3/1/6/131637271/vorenujikebibaj_lavasal_gafigeluwukivid_terepat.pdf
    • http://nafan.christinalouisefitness.com/uploads/1/3/2/8/132814930/4365668.pdf
    • https://cdn.shopify.com/s/files/1/0428/9380/3679/files/97454042086.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/bamemonafeduwuvewixikebis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/rikakozatawofokamediro.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/zafot.pdf
    • https://cdn.shopify.com/s/files/1/0444/3032/7975/files/2020_malayalam_calendar_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/8074/3080/files/beriris.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/install_maven_linux.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/libofusumosuxot.pdf
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/69127426547.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/43884248172.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_off00007b07.bin
fa3d9881203b7079ce32f1ba062a30f7a58d31817a8251070292b2b9cc8959e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B07 5332 bytes
font_01_sfnt_off00008d18.bin
cff478ac8b037200d1e90ebf37c92a370c3eae6d8e1918c68ff4225835736047		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D18 10188 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.