Malicious PDF — malware analysis report

Static analysis result for SHA-256 574fe2f78c06971c…

MALICIOUS

PDF

53.1 KB Created: 2020-07-29 05:00:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67057c34c884079f9c92ad33ce6073c1 SHA-1: ee9dc6dfadd6b9ac745709a0e405bd73c5407608 SHA-256: 574fe2f78c06971c6acac3956797a2c1c4a1ea5723f77fb5c6aa88f401c5fa8a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure related to 'Movies apk for firestick'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. The presence of a large number of links hosted on cdn.shopify.com, while individually confirmed benign, suggests a link farm strategy to obscure the malicious redirector.

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.ru/pify?keyword=movies+apk+for+firestick
    • http://files.verdictomaha.com/uploads/1/3/2/8/132815220/50efcc9051b.pdf
    • http://files.winereviewsbyjacob.com/uploads/1/3/0/7/130775858/dilex.pdf
    • http://files.4thdvpanecs.com/uploads/1/3/0/7/130739971/1208183.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/xunavatilalojepoxamekawi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/riravabesowa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/gotazerekunazorozokak.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/10693737299.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/bepoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1432/3356/files/53512854237.pdf
    • https://cdn.shopify.com/s/files/1/0433/7411/7015/files/godakipejedevefox.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/93279687981.pdf
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/raninuxufogegozuxarobev.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8102/files/gonide.pdf
    • https://cdn.shopify.com/s/files/1/0438/9755/3064/files/96948877573.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55079075607.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/pixotatogofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/62486965956.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/
    • https://cdn.shopify.com

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008233.bin
b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
pdf-font-stream PDF embedded font (sfnt) at offset 0x8233 6744 bytes
font_01_sfnt_off00009318.bin
4d8444e7a1c8d5523f66262684912edf836b2f3f977ceea973423b34f0a443ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x9318 4788 bytes
font_02_sfnt_off0000a387.bin
70c59e03cac472949d8811cc78cb905d4fd8bbfb5225e96f1df60644079e7ebe
pdf-font-stream PDF embedded font (sfnt) at offset 0xA387 10412 bytes