Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a4cf9c4a5ae782…

MALICIOUS

PDF

33.6 KB Created: 2020-08-14 21:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a489866b53f5cb07d7e0511b0cf96b21 SHA-1: 6f7dfa9e135005ae70ecb1586a7a362b8487d404 SHA-256: 36a4cf9c4a5ae78256762a5030529a1100afec5068bc1461750db209c4a4200b
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=georgia+fishing+game+report, suggesting a lure to a malicious site. The PDF also contains a large number of external links, many hosted on shopify.com, which is flagged as a PDF_SEO_LINK_FARM. The ML classifier strongly supports the malicious verdict.

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=georgia+fishing+game+report
    • http://bidojatuv.screenenterprise.com/uploads/1/3/0/7/130775607/fijobokomozogu.pdf
    • http://files.healthyandfitwny.com/uploads/1/3/2/6/132681293/2517a7f6.pdf
    • http://files.salmochildrenscentre.net/uploads/1/3/2/6/132680874/5074919.pdf
    • http://files.thepinkbeadshop.com/uploads/1/3/1/3/131380343/2951849.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/liwupuna.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/matlab_for_engineers_3rd_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/7705/0272/files/btec_level_3_health_and_social_care_revision_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/bawli_tared_ja_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/kavopomuwumifuruz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9089/files/rarobonedinasegajulan.pdf
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/64048517183.pdf
    • https://cdn.shopify.com/s/files/1/0437/7251/0362/files/fuzofevumesopozex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/gilipezuso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/54256870498.pdf
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/pazesok.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_off000045cb.bin
a1cb086598d99468a5f5067f365fa06aa53deea4327be6e1f172f5f4480c3b1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45CB 5316 bytes
font_01_sfnt_off000057bc.bin
e917deb9fbad1f42e59120a60e27f8b82c16a80234876605aefbf0e7195ec616		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BC 10104 bytes

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