Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f8759140169e10…

MALICIOUS

PDF

47.3 KB Created: 2020-08-24 23:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f2b6d1a5cf6fe6abfb398daf0572ace SHA-1: 1dcf3c8c9fe0811b944a20b167d43c8aa442459d SHA-256: 03f8759140169e101bfd1ecf1166dca98dc94d475eb3ab1bf81d4db844b8adf5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though obfuscated, contains text related to financial templates and a URL that is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=balance+sheet+budget+template+excel
    • http://jogabuvip.ginapeakva.com/uploads/1/3/0/7/130775118/xikikubujonavaxuziz.pdf
    • http://files.myrawilliamsottewell.com/uploads/1/3/2/6/132682168/653f1b112df.pdf
    • http://files.jasonetonscott.com/uploads/1/3/0/8/130874451/tivexafidi.pdf
    • http://files.journeyhappyfit.com/uploads/1/3/1/4/131406202/f52f6a3665.pdf
    • http://pufapepi.care.coach/uploads/1/3/1/6/131607254/41eb24.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/36726675056.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/dinezif.pdf
    • https://cdn.shopify.com/s/files/1/0452/8416/3746/files/cambridge_primary_english_learner_s_book_4.pdf
    • https://cdn.shopify.com/s/files/1/0466/3033/8725/files/14535067176.pdf
    • https://cdn.shopify.com/s/files/1/0433/8139/1514/files/zovubazam.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/maths_worksheets_ks1_year_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/6268/8918/files/accounting_for_management.pdf
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/practica_de_destilacion_por_arrastre_de_vapor.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/zakitosavonupuwowaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/1543/7468/files/sonirop.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_off00006d2f.bin
548ee8af7191d6c81e2206e4c699c56997fe21c950c0b10331df6a60f62072ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2F 5372 bytes
font_01_sfnt_off00007f44.bin
c6fb8b05634a635d7dfd29a1cf4ee84730fae918015addd09dba75f7910f6506		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 10208 bytes
font_02_sfnt_off0000a230.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA230 4324 bytes

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