Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7809662cb649b8…

MALICIOUS

PDF

59.8 KB Created: 2020-08-09 15:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b1d3c6c1375a6bd5982e778196c4c7e SHA-1: 70eacb704cb584505dd20371dbd13e7895de9b2d SHA-256: 9b7809662cb649b89177c0f59b0629e5d9cd11a4a3d6957b4eca286161a8fa37
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=basic+bending+moment+and+shear+force+diagrams+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one to 'https://cdn.shopify.com/s/files/1/0431/2530/9604/files/jujuxamidozike.pdf'. The document body, though partially corrupted, contains text related to technical diagrams and the wkhtmltopdf application, suggesting a lure to disguise malicious intent.

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=basic+bending+moment+and+shear+force+diagrams+pdf
    • http://files.studiobdancecenter.org/uploads/1/3/0/8/130813644/8695328.pdf
    • http://files.cucornell.org/uploads/1/3/0/7/130775653/wegutalasux.pdf
    • http://files.azrya.com/uploads/1/3/1/1/131164387/wulebonuwu.pdf
    • http://togewimu.upsingingambassadors.com/uploads/1/3/0/7/130775506/fowokujupolut.pdf
    • http://nuliku.homecinemas.ie/uploads/1/3/1/4/131407558/ratirejejabu-rekanes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/jujuxamidozike.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/jisufamesibotakodido.pdf
    • https://cdn.shopify.com/s/files/1/0441/0766/1464/files/weverofod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kawovuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/23278315324.pdf
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/58604032887.pdf
    • https://cdn.shopify.com/s/files/1/0434/1858/3192/files/56023115526.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/31521823566.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/guwugemopifugotozajutix.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/comment_installer_une_camra_de_surveillance_wifi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0916/2907/files/fomoxegotelapufowapopimo.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_off00008987.bin
fdedcd43e7c9af27b742f1215797343b18c917914dfb6879e4ba6f90b2054ff2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8987 5724 bytes
font_01_sfnt_off00009cd2.bin
301d957547d2744ff1adb03ed1a22febbe2a24a3c04a9489ca6c9a3b24bf160c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD2 15288 bytes
font_02_sfnt_off0000ccd4.bin
58a1e1f5b06e63281e1c84f804f7eeb3fa21835e9eae58838fedc7273f8b9f4b
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD4 16096 bytes