Malicious PDF — malware analysis report

Static analysis result for SHA-256 8120a20e482662cc…

MALICIOUS

PDF

76.4 KB Created: 2020-09-16 14:18:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62577c0e8c8316bf87dcd4552abe5c68 SHA-1: a0336e1a44db5236bf9ec41dc47c6d6f8b5fb58f SHA-256: 8120a20e482662cc7a5fbf68ef81775e8c85050b823687ae281c93e420319324
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'ttraff.me'. Additionally, it exhibits characteristics of a PDF_SEO_LINK_FARM, with numerous embedded links, including one to a Shopify domain. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to malicious infrastructure.

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.me/wix?keyword=anakin+solo+is+kylo+ren
    • http://files.nicolaforemanquilts.com/uploads/1/3/1/0/131070904/9419489.pdf
    • http://dajiseril.stewartislandnews.com/uploads/1/3/0/7/130740257/f9a97a9679ed30b.pdf
    • http://norafiniw.dustybootraveler.com/uploads/1/3/1/6/131606233/sanovidatagezi-wigeliwowaguto-menezit.pdf
    • http://files.sledgedistillery.com/uploads/1/3/1/1/131163599/datusuvabafevumonagu.pdf
    • http://wavena.design59.com/uploads/1/3/0/8/130874426/b0c4e53116db.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/32600765790.pdf
    • https://cdn.shopify.com/s/files/1/0483/8477/0199/files/jezerufugep.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/xewig.pdf
    • https://cdn.shopify.com/s/files/1/0439/4971/9720/files/velav.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7142/files/free_file_splitter_software.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/bourdieu_symbolic_capital.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/satizor.pdf
    • https://cdn.shopify.com/s/files/1/0433/6851/3686/files/magujujinawama.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/netoneneza.pdf
    • https://cdn.shopify.com/s/files/1/0463/8510/3003/files/36038192257.pdf
    • https://cf2beb9b-2d83-4e1a-bc33-a5e65a185e3f.filesusr.com/ugd/154db6_e1b81d3291bd46a18b7935363dee4256.pdf?index=true
    • https://62728fd4-0953-4e93-8e9c-d76a20065c9a.filesusr.com/ugd/3ed902_50ca38d5215349f0a695d6307305775c.pdf?index=true
    • https://eaf140de-2736-4f6c-a4de-289bc98c1b9c.filesusr.com/ugd/dcf311_384e75caa8e04c8abec9b99f10e86296.pdf?index=true
    • 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_off0000d7c9.bin
fa192f2111c35e946b4b3479baad9d5ee4548ecf8189229792d43380f177ec15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C9 6384 bytes
font_01_sfnt_off0000edc9.bin
b2f11149372e10c8a4921ff77d6dbe5fde6839a04ead26c8d52634d6b341748c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC9 4836 bytes
font_02_sfnt_off0000fe52.bin
1f706b92c55c213e1a640540b4be1dd12ac3b80735562624bad317b03210aed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE52 11064 bytes

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