Malicious PDF — malware analysis report

Static analysis result for SHA-256 78eab273ae0ffcc7…

MALICIOUS

PDF

42.3 KB Created: 2020-10-06 23:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feba8b02b9d924d169e6a981fe75d2c0 SHA-1: 447203cccd970dd56f49f36e0781dc65410b336e SHA-256: 78eab273ae0ffcc70df718ade2da74e5e011912a02042787cde2be5b26e4a30e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary URL pointing to a known malicious redirector. The document body, though partially corrupted, contains the same URL and a reference to 'read thru the bible in 6 months', suggesting a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a coordinated effort to drive traffic to potentially harmful sites.

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://cctraff.ru/strik?keyword=read+thru+the+bible+in+6+months
    • http://files.kappasigmamu.com/uploads/1/3/1/4/131438228/fusajabetag.pdf
    • http://jexuzu.thevillageyarnery.com/uploads/1/3/0/8/130814729/9912456.pdf
    • http://files.kreativedimension.com/uploads/1/3/1/4/131438567/333125.pdf
    • http://kexedexo.littlecoveliving.net/uploads/1/3/1/4/131438641/70a2d2be84.pdf
    • http://denuluded.catv35.com/uploads/1/3/2/8/132814838/xusamubutaxi-tagasajakube-zojugojofezu-zijatumomisum.pdf
    • http://files.artbyannette.com/uploads/1/3/1/3/131384542/rotipudibi.pdf
    • http://japuzol.drmegangomez.com/uploads/1/3/2/7/132740780/lojamomabama.pdf
    • http://files.425sqn.org/uploads/1/3/0/8/130814642/zotazaboma.pdf
    • http://pegusi.changingplaces.hsieteachers.com/uploads/1/3/2/6/132682006/62ea9d6ee5f.pdf
    • http://maxune.alpost522.com/uploads/1/3/0/9/130969627/000b96aece254b.pdf
    • http://dejedu.martinisimagedesign.com/uploads/1/3/0/7/130740019/8be2b2.pdf
    • http://jafegezo.meeshaandpip.com/uploads/1/3/0/7/130776791/guzagesadusapibafu.pdf
    • http://nejan.barbara-sonner.com/uploads/1/3/1/4/131437594/bisedo_somuvugexepug.pdf
    • https://uploads.strikinglycdn.com/files/52c588d3-778d-4df5-b5fa-822a3dc1d4ce/ladinazowuvemetukizepowum.pdf
    • https://uploads.strikinglycdn.com/files/973c667e-bae6-4933-a984-340ea15c2b58/29795143801.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_off000067ec.bin
170280a11934763e7e1a6067f0d6bc30a5de4878e52b53751f79b9851c350080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EC 5364 bytes
font_01_sfnt_off000079fe.bin
83954d2e6629c4f08a88c61efe0b8c5a1d00c1fd4a098d5036a7e46f73b0630a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79FE 10132 bytes

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