Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e819837e7a319d9…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 20:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d4880f86d78104aad33fa8a4ea35705 SHA-1: be4c3b0612a55c11c235293608286024d33ed273 SHA-256: 9e819837e7a319d963c5d9f2211a9f49e5d55392727d02a4c80a4cabd5d6d62c
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a job application, suggesting a social engineering lure. The PDF also contains a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, which points to numerous other PDFs, likely for SEO poisoning or distributing further malicious content.

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.cc/pify?keyword=job+application+letter+sample+for+teacher+pdf
    • http://files.veronicahallockart.com/uploads/1/3/1/4/131454264/zuliguvonelivi_vumed.pdf
    • http://files.akaoxo.org/uploads/1/3/2/8/132816041/mefisade.pdf
    • http://files.joolboxcreations.com/uploads/1/3/1/0/131070247/xabate-rovakuxub-wexoduvizuxi.pdf
    • http://golosowe.jamesaodell.com/uploads/1/3/2/6/132681670/240338f66a.pdf
    • http://semela.darlingyoga.com/uploads/1/3/1/4/131411896/ranibi_tadumafamezugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/13985942380.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/73431449884.pdf
    • https://cdn.shopify.com/s/files/1/0448/4897/1938/files/understanding_ethnic_conflict.pdf
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/duvozoni.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/zumawanamunopep.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/checklist_for_autism_spectrum_disorder_casd.pdf
    • https://cdn.shopify.com/s/files/1/0429/2490/0515/files/nutikowigafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85484739365.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/23336209574.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/18542785953.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8447/files/66239999725.pdf
    • https://cdn.shopify.com/s/files/1/0435/8871/4653/files/form_storm_norm_perform.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/wifulozojenetowesowukaxin.pdf
    • https://cdn.shopify.com/s/files/1/0436/1230/7618/files/laplacien_en_coordonnes_cylindriques.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_off000064bc.bin
ba3014899da5936de5b962daaad6f2e1e493a88b6350ef7beae0bd1d83414bcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x64BC 5312 bytes
font_01_sfnt_off00007683.bin
aa58db1851544edeb966989b47663072895fb19fcc1ae1d9e9e8c93e0a230bbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7683 9976 bytes
font_02_sfnt_off00009894.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9894 4324 bytes