Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8fccf93c01291f…

MALICIOUS

PDF

41.1 KB Created: 2020-07-10 10:02:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfb68d796f697d203d202a47ee3abaa2 SHA-1: 82f6666e4ede00d0b5cd6c360efc48709c751b15 SHA-256: cb8fccf93c01291fafab7763676b38e8a8360091b29170bf89a18b9f8bac1940
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The document body text and embedded links suggest a lure to download further content, potentially malicious, under the guise of a 'Blues rock guitar bible pdf'. The primary malicious URL identified is https://ttraff.com/wb?keyword=blues%20rock%20guitar%20bible%20pdf, which is flagged as a malicious redirector. The extensive use of SEO-optimized PDF links indicates a campaign to distribute malicious content.

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.com/wb?keyword=blues%20rock%20guitar%20bible%20pdf
    • http://files.ammoniteyarns.co.uk/uploads/1/3/1/3/131381640/841e566.pdf
    • http://files.labelleboutiquenyc.com/uploads/1/3/1/1/131164002/saxegelirelozowozej.pdf
    • http://files.tampalandscapedesign.com/uploads/1/3/1/8/131857580/dajaguxetolaz.pdf
    • http://files.paigeorwin.com/uploads/1/3/0/7/130776439/donapoxikoze_xinijizirebuka_wibegevelonese.pdf
    • http://files.blindsail.com/uploads/1/3/2/6/132695347/togipimivubaxa-lepomafewuriben.pdf
    • http://files.rebeccaocainlaw.com/uploads/1/3/0/8/130813646/73312de.pdf
    • http://files.mitchcom.com/uploads/1/3/1/3/131398573/bajilumigabit.pdf
    • http://files.mrssmithsclasses.com/uploads/1/3/1/4/131408353/denow.pdf
    • http://files.dbcdeer.com/uploads/1/3/2/6/132683069/sazirupiro-wumakewofobe-gomegikuxapa.pdf
    • http://files.ncontrack.org/uploads/1/3/1/4/131438366/2447321.pdf
    • http://files.jemun.net/uploads/1/3/1/4/131437538/zimef-pafitakimu-kazuwapofi-xefulogekasa.pdf
    • https://mivugafe.files.wordpress.com/2020/06/43264023291.pdf
    • https://nenutarutu.files.wordpress.com/2020/07/bopeli.pdf
    • https://mupaperiwive.files.wordpress.com/2020/07/78741239613.pdf
    • https://fupesulalej613687639.files.wordpress.com/2020/06/65026470434.pdf
    • https://pupuliledis.files.wordpress.com/2020/06/xuratanexazizogutovamala.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nedodakamilutejevojive.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74133662670.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/14981909947.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5081520916.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_off0000631f.bin
0bf0a35a2784567839a721a2dae7b06bf67172ab8e98d9af91c05c160c11a1a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631F 5352 bytes
font_01_sfnt_off00007564.bin
1ff73e99cd20df163ffddd7c2b43886b044aa5a7e125c0ea0c5fc7feffc75b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7564 9904 bytes

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