Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eaf2afe6c929c7e…

MALICIOUS

PDF

42.3 KB Created: 2020-08-01 06:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5b065918da1decd05fbbce252b392cd SHA-1: 94fee224c8d6e956862a7874b064a3c7abe17aed SHA-256: 3eaf2afe6c929c7e34d9e57ee7fc94326c6da714f4c6fbc46e10374eea09f3eb
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting an SEO spam or phishing campaign. The embedded URL https://ttraff.ru/pify?keyword=javascript+object+to+string is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and numerous other links hosted on cdn.shopify.com, indicating a link farm strategy.

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=javascript+object+to+string
    • http://files.reecefluidpower.com/uploads/1/3/0/7/130739895/6585971.pdf
    • http://files.charlielavaroni.com/uploads/1/3/2/6/132681479/3009248.pdf
    • http://files.csbcstatesville.com/uploads/1/3/0/7/130776206/tukoturituva_muvupewan_bomex_tevelebevutagak.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/kudasaliladepalesaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/vapesaremolim.pdf
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/32440051798.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/39175354790.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/fidevowuxafifukobulojo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/nudaloxize.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0434/1114/4861/files/96480580706.pdf
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/fadonunegodirireferuraj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/kulibapegipoxekigewo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/duselorawovezakon.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/75194431024.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_off00005c1e.bin
d96753f9b6db53234fd4b955c50a780c46aebba60f4e4e775da036e54914dcfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1E 5332 bytes
font_01_sfnt_off00006e5d.bin
cc4ace41c8497781377f849362fd93a2d329e6e19597b88be95c98eabfecf7d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5D 14528 bytes

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