Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb919a5f48bfd3e…

MALICIOUS

PDF

63.8 KB Created: 2020-07-31 20:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce019ee79ec6eabace7d04b74207c432 SHA-1: f865fc8d0a6d2a3d347da542dc01fb6d97510fdb SHA-256: edb919a5f48bfd3e3760544cd80b372d576f80ac9052b61d0e3e67202a62b794
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=prebles+artforms+12th+edition+pdf+free'. This URL is likely used to redirect users to a malicious site. The PDF also exhibits characteristics of an SEO link farm, with numerous embedded links, suggesting an attempt to manipulate search engine results and drive traffic to malicious content.

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=prebles+artforms+12th+edition+pdf+free
    • http://files.batteryparkschool.com/uploads/1/3/1/4/131483153/solonabidunurir_zugenigutito.pdf
    • http://files.kellyhosts.com/uploads/1/3/0/9/130968996/guwokimejuk.pdf
    • http://files.kundaliniyogamanchester.com/uploads/1/3/1/4/131453577/duniwugeluze.pdf
    • http://files.gailrosethompson.com/uploads/1/3/0/7/130775992/puvijaruj-wabipukebexove-zadefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/akg_y500_manual_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/63075656415.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/tipazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44994208471.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/50606417604.pdf
    • https://cdn.shopify.com/s/files/1/0435/9290/8963/files/15174310026.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/57907730474.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/vabufixolobamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/fawewivadanipidelexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/43485634751.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/moxujawabisoke.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/kekusosofosujedesirufore.pdf
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/16191394379.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/
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/63075656415.p

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096dd.bin
0d6f5c91425516cf4ac5ca827bd9f8dafea7d3f9b4fdf97e16a656154870f958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96DD 5608 bytes
font_01_sfnt_off0000a9bc.bin
10b97d8a06912f94799185ace647fc5292cc76ae692f369a7156ced9232ff913		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BC 2576 bytes
font_02_sfnt_off0000b37c.bin
62d1fc98ddc7eb41a9b18e8aa210d86439bab295b0b5af13e7fab8f6b56c70ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB37C 10468 bytes
font_03_sfnt_off0000d77f.bin
eeb3f76ed05c21642d486420f5ced661d75a82e630bc15f6c8026468688c6baf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD77F 16780 bytes

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