Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bba6328728c9e5…

MALICIOUS

PDF

47.5 KB Created: 2020-08-15 08:36:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 269107ffd26daf097b987dc582cc852c SHA-1: 425385cd9db5c3f1751470c46e6791f9667aa0ec SHA-256: 88bba6328728c9e575c73ec41e30e18f5c553ace2e2d4e98ac202eddd5fec045
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'high school transcript template' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious URL is ttraff.ru, which redirects to a page related to the search term. The presence of numerous other PDF links, many hosted on cdn.shopify.com, suggests a link farm designed to improve SEO for malicious content or to distribute further payloads.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=high+school+transcript+template+typable
    • http://files.jaquelinesnowe.com/uploads/1/3/1/4/131408798/kasujefidavel-paxonodor-lapejokileluw.pdf
    • http://files.innovativepossibilities.org/uploads/1/3/0/7/130739509/ae0ac16.pdf
    • http://files.milliondollarsmile-pp.com/uploads/1/3/2/6/132681877/2289120.pdf
    • http://files.federicoanselmi.net/uploads/1/3/0/7/130739918/bavafagewo.pdf
    • http://files.sanmukyuu.com/uploads/1/3/1/6/131606533/busunijoxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/alleluia_alleluia_give_thanks_to_the_risen_lord.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5117/files/lotivepug.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/45784484411.pdf
    • https://cdn.shopify.com/s/files/1/0440/3383/5173/files/absceso_hepatico_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0434/8670/7876/files/anne_of_green_gables_musical_score.pdf
    • https://cdn.shopify.com/s/files/1/0444/2639/5814/files/kubota_b7100_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5520/9886/files/array_of_colors.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/tasha_cobbs_grace.pdf
    • https://cdn.shopify.com/s/files/1/0446/1946/4867/files/bulking_workout.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/the_incredible_hulk_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/59267155969.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000720d.bin
59c206f9e99116b6714952c8d4b643594ee696cd161d48c2218582817212d09b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720D 5548 bytes
font_01_sfnt_off000084b8.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B8 1800 bytes
font_02_sfnt_off00008d45.bin
fb26d0a0eb52bff8c95e7090f873955da82081fde0b7218ee570f6ed0cf413da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D45 10240 bytes

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