Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1af0a855bd20ab6…

MALICIOUS

PDF

41.4 KB Created: 2020-08-09 21:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a27a507caf83f45aa144a711bdb272d SHA-1: ce8677dedba70eacc06fde71daadbc428e9c9637 SHA-256: e1af0a855bd20ab6ed5e3b0d5fb553610a3b8ed7b8f30332cfbe616b579f2cdc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=b%25C3%25A9n%25C3%25A9ficiaire+effectif+pdf+remplissable
    • http://bixavidiw.dougzanderart.com/uploads/1/3/2/6/132682076/binososoxodug.pdf
    • http://files.bremnerglassandglazing.com/uploads/1/3/1/6/131607522/3177076.pdf
    • http://files.citizensforenvironmentalstewardship.org/uploads/1/3/0/7/130739415/dedunigoxajim.pdf
    • http://files.ultimatepalestine.com/uploads/1/3/1/4/131414240/2723728.pdf
    • http://files.thereddyhouse.com/uploads/1/3/0/8/130813747/mumabilureluno-nupumasifevu-vadevela.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/dovixupudojoxunivemixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/62829712415.pdf
    • https://cdn.shopify.com/s/files/1/0432/4658/3976/files/subukanazuwaduvebatib.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/44414506237.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/nimalivisag.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/du_b._ed_entrance_exam_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1416/files/pazimakamevanonaja.pdf
    • https://cdn.shopify.com/s/files/1/0429/9984/0921/files/gevorupefokiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/pronunciacion_del_abecedario_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/76025921413.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_off00005d5d.bin
0629c6b26d3c6e73a675f225d1220590b856b5a4eafdda437916c526202365cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5D 5632 bytes
font_01_sfnt_off0000702b.bin
42c08aeee8ae9e00a12478a9fab422a6fed25e7572b0ccbe1e748cb515edaebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x702B 12200 bytes

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