Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc3d831aed5ed41…

MALICIOUS

PDF

54.5 KB Created: 2020-07-28 09:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0076ad4b3ea38abd6ac571d153087e3b SHA-1: 2e2126309a4ec956fb9063369bb73766902abfbe SHA-256: 1dc3d831aed5ed4149f8d42f01002e5e6c07e21a60146248f90dc23126413d68
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to 'ttraff.ru'. This suggests a phishing or scam attempt disguised as a template, aiming to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=taxi+booking+app+template
    • http://files.myteamtriumph-ga.org/uploads/1/3/1/4/131452840/9117464.pdf
    • http://files.elliscountyequine.org/uploads/1/3/0/7/130739288/sipib-petawavemugez-zexix.pdf
    • http://files.kolega-guesthouse.com/uploads/1/3/1/4/131438427/8247577.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/52040472201.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/vopitopipupiweroremojuwuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2383/files/94774734485.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/2855460261.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/jufagalikekaxinep.pdf
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/fodamozavuwawaxabotof.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/kupukowirobozi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/90111451464.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/41327298414.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/mamexo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/tadojasetil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.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_off00008b36.bin
f92c1ed0c97990f785ee2a0b9d4b15b7a10cb8a52564719320e5cdc7ca8bfd6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B36 4876 bytes
font_01_sfnt_off00009bb9.bin
3da7dae40694c90cc0f9c31f967689fec7e75ca88204545903717f6cef4d79bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB9 15628 bytes

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