Malicious PDF — malware analysis report

Static analysis result for SHA-256 490738561f9ca8ff…

MALICIOUS

PDF

98.0 KB Created: 2020-08-06 17:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3326df72adc0075df0064f5efd5ec103 SHA-1: 3223ad5c696f84358ac9585b56e49fb77282b0c8 SHA-256: 490738561f9ca8ff762117293bcd317aadf39581b5960e92ab445a9b9dbc1ff7
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=functional+strategy+pdf'. Additionally, it exhibits characteristics of an advance-fee scam lure, suggesting the document's purpose is to trick users into clicking malicious links. The presence of numerous embedded PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=functional+strategy+pdf
    • http://files.centralflhomeeducationservices.com/uploads/1/3/1/1/131163691/gazosubabopirot.pdf
    • http://files.zanesvillechurchofgodcoopermillroad.com/uploads/1/3/2/7/132740836/penuli_walixuwup_fojubapoki.pdf
    • http://files.soudersthirdgrade.com/uploads/1/3/1/8/131856602/5ec6a7e4e88c5.pdf
    • http://files.hellotherehuman.com/uploads/1/3/1/4/131438092/zivubu.pdf
    • http://files.lincolnfencecontractors.com/uploads/1/3/2/6/132681938/7c5f525598fb.pdf
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/latubexoximubizipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/runoruviridemim.pdf
    • https://cdn.shopify.com/s/files/1/0436/4173/3273/files/93146563445.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdf
    • https://cdn.shopify.com/s/files/1/0433/5245/7369/files/r_integer_0.pdf
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/bsc_method_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3990/files/zefuguramutidokeruwimeb.pdf
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/60228994349.pdf
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/10080250559.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_off000144a6.bin
c3e04349eb17c76272712f50fdd4a79d710f4ab03295b54f98ba4d7147639496
pdf-font-stream PDF embedded font (sfnt) at offset 0x144A6 5380 bytes
font_01_sfnt_off0001570d.bin
2cb6cb977fbd41c0ccc4d4479c16a134ebd2902882fe6aed632126d879865805
pdf-font-stream PDF embedded font (sfnt) at offset 0x1570D 10588 bytes