Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e6366ef880dd4e…

MALICIOUS

PDF

44.5 KB Created: 2020-07-21 14:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02e46864b9b2861ab8cceba331ee2e8c SHA-1: 7ace7cd7224073a86a9a05fb94a23e61518e324d SHA-256: b0e6366ef880dd4ee1f5bf6faaf500d4576776723477ea3b0604f6c01ba6980b
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identifies a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to malicious sites. The ML classifier also strongly indicates maliciousness. The document body is heavily obfuscated and unreadable, but the presence of a large number of external links, including one to a malicious redirector, strongly suggests a phishing or malware distribution attempt.

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.cc/wb?keyword=el%20cultivo%20de%20tomate%20pdf
    • http://files.faithtowalkministries.com/uploads/1/3/1/3/131381363/zakapigonamimo_setetuv.pdf
    • http://files.willcooperart.com/uploads/1/3/2/8/132815118/1159377.pdf
    • http://files.coffeekilimanjaro.com/uploads/1/3/1/0/131070230/f6ed79.pdf
    • http://files.starstufftravel.com/uploads/1/3/1/4/131453086/6f3694a5c7.pdf
    • http://files.ryankatephotography.com/uploads/1/3/1/6/131606674/707c8b4995.pdf
    • http://files.ryankatephotography.com/uploads/1/3/1/6/131606674/707c8b499
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/jitelizabunosirakedubik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/dowomata.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/94826402579.pdf
    • https://sapofavef.files.wordpress.com/2020/07/72666440422.pdf
    • https://pubixof.files.wordpress.com/2020/07/43546974596.pdf
    • https://jikizazona.files.wordpress.com/2020/06/kamavefiboroto.pdf
    • https://goxilex.files.wordpress.com/2020/07/feziliduf.pdf
    • https://polagigeso.files.wordpress.com/2020/06/rerubojije.pdf
    • https://cdn.shopify.com/s/files/1/0428/1348/9318/files/54737925471.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/zewaxetabutagetu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/nigaxemitudifusasuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/75055853565.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9755/files/25178387841.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/84306033223.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_off00006fe8.bin
33e51d5f74a175478aa2069857be845b62fb520060eb656a2b0ab35824102997
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE8 4820 bytes
font_01_sfnt_off0000805a.bin
539cc970b5e9e0e318c809750f378a5bc875aadc11a50da79b42c3524bbee414
pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 11192 bytes