Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eacbd24fa38bb1d…

MALICIOUS

PDF

49.3 KB Created: 2020-08-24 14:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0aa2faaf81a8f85fe7a4d0a72e999f88 SHA-1: 3cc68b80c541f1fb721280396ed682b69a54b50b SHA-256: 6eacbd24fa38bb1d82076d64be6bc48bad612fc7166a48e1924ced7bf68fcfae
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or scam pretext, further supported by the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=platform+economy+summit
    • http://kavemim.charlottecookingclub.co.uk/uploads/1/3/2/3/132303079/rojelew-duxukivugik-bolifusuguja-sesiz.pdf
    • http://jazodoke.aelitasattic.com/uploads/1/3/2/6/132680835/nudevaz.pdf
    • http://files.wellsteadshrubs.com/uploads/1/3/2/6/132681910/0f5f98.pdf
    • http://files.audreyrileyart.com/uploads/1/3/0/7/130739452/fukesugag-sazemuvaja-kodafemuxowu.pdf
    • http://files.migueljuarezdb.com/uploads/1/3/0/9/130969085/ba83a8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/chatterbox_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/3952/1958/files/anita_blake_27.pdf
    • https://cdn.shopify.com/s/files/1/0443/4470/5180/files/lidimelulan.pdf
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/66341541278.pdf
    • https://cdn.shopify.com/s/files/1/0460/7780/4708/files/self_certification_form_print.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/29111131735.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/2016_ps4_game_releases.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7836/files/celebrity_makeover_games.pdf
    • https://cdn.shopify.com/s/files/1/0428/2092/7644/files/2627122303.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5688/files/official_gre_verbal_reasoning_practice_questions_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/14908861009.pdf
    • https://cdn.shopify.com/s/files/1/0434/4587/8950/files/besowasogamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4089/0262/files/varices_esofagicas_grados.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/kisamisiwisumugifumen.pdf
    • https://cdn.shopify.com/s/files/1/0433/4764/0469/files/game_guardian_for_pc_windows_7.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007670.bin
e83fd7b5f8f3418c77671d31c34e368ec423940cf2f91a9162e3d86d4745b8d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 5132 bytes
font_01_sfnt_off000087c9.bin
2d1c02d7faeb7dad5af5d103f135926a0d4fd4e69f3a7da8959d46cf8e88466d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 3120 bytes
font_02_sfnt_off0000944c.bin
aca929ca796128f2bef944fde7a3edf0c3622ea39879e5903678f6c467ba1d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x944C 10412 bytes

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