Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb84b9681ea7108f…

MALICIOUS

PDF

35.6 KB Created: 2020-08-03 21:35:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eb5fb53121b2532f36f02cfc1912d52 SHA-1: 4836a6c639291ae84afea8a00a67980630b28e05 SHA-256: eb84b9681ea7108f9a7925bfc921c8133c2f9eaf1c6cad1a57a888cecc0c5e6d
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-optimized to appear as legitimate book downloads. The primary link, 'https://ttraff.ru/pify?keyword=pernkopf+topographic+anatomy+of+man+pdf+free+download', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links under the guise of providing free content, likely leading to further malware or phishing attempts.

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=pernkopf+topographic+anatomy+of+man+pdf+free+download
    • http://jujup.woofgangkennels.com/uploads/1/3/2/6/132682090/piferipo-folekapazu-jowiwaxiledo-linuguvasi.pdf
    • http://files.destinationweddingsbigisland.com/uploads/1/3/0/7/130738681/24680089f761.pdf
    • http://files.bizcontrol.net/uploads/1/3/1/3/131380626/jenovop-xakosuz.pdf
    • http://files.arlingtonmsband.com/uploads/1/3/1/6/131606087/ddee7.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/4405716031.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/danidafamomumawaliz.pdf
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/togifixukofajofob.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/76324549119.pdf
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/18179785091.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6408/files/shelby_county_license_office.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/godazufawaxebov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/50266217914.pdf
    • https://cdn.shopify.com/s/files/1/0428/2069/8268/files/43567991357.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/nefomekexikorowurepep.pdf
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/tumewimave.pdf
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/23581612343.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_off00004b4b.bin
6e95283b3997940db582c34875a89cf4b9876e9c6aee8b30e0b7eda6a34bf940
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B4B 5648 bytes
font_01_sfnt_off00005e7c.bin
108cd1d0e2f55a992ec8c1cba3ff05c180d3ed142d4110f832b84ab2b1eb6254
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7C 10100 bytes