Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ed3038e7caa011…

MALICIOUS

PDF

49.8 KB Created: 2020-09-16 15:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36efe8f70ed5ddf4d37fc32845b889c9 SHA-1: 23ed92a7505cb81eddf7ed9c398222a37c8a3cc1 SHA-256: 72ed3038e7caa0119664fef9c84ee57ec6e472627ccb5ce4dd97bddff683e6b7
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign content, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for a fake download or content. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute the malicious URL.

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.club/wix?keyword=toy+story+4+drive+mp4
    • http://makag.copasah.org/uploads/1/3/0/7/130739560/e4ca7187.pdf
    • http://begupu.newwoodturners.org/uploads/1/3/2/7/132740267/zoboregekalamojaba.pdf
    • http://zibujen.lakeodessaarts.com/uploads/1/3/1/4/131454215/tosivepekivo.pdf
    • http://wiruwuz.cristalpgarcia.com/uploads/1/3/0/7/130775607/7822959.pdf
    • http://files.fuseplus.com/uploads/1/3/0/7/130739234/10204.pdf
    • http://livehdmovie.xyz/movie/301528/to
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://b3986010-7d79-4ecf-a28e-ad4af654e52c.filesusr.com/ugd/3225da_720f88717d8b44ef927dbca03f39585e.pdf?index=true
    • https://b46a8587-d84c-4f12-a12d-dd98ba4685f6.filesusr.com/ugd/3e87bf_c12bad6836184605ba6cc2f1a28849f5.pdf?index=true
    • https://c72f0730-db48-4cf4-aeb7-52055bbf4bb9.filesusr.com/ugd/d4a9d6_72ceeff4c8eb44d1b0c145295e7957db.pdf?index=true
    • https://64461ea6-c2f4-4320-b989-05f9865b2e23.filesusr.com/ugd/ac8c68_4c977a04db084808a9de6f1400f0111b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/african_symbols_and_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/lulurolededelilo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2488/2583/files/protones_neutrones_electrones_y_quarks.pdf
    • https://cdn.shopify.com/s/files/1/0433/1857/5262/files/vmware_workstation_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/nerefusuliroji.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0554/files/30316216387.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b9.bin
f3ee72efe823262d351387813a5c6e5eff403aafaa0c52837732e41e33c049b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B9 4744 bytes
font_01_sfnt_off000071ef.bin
ef0057a99d99c08c50f8ba80fff893ec2606ea0041ba1bab752df90659299dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EF 10464 bytes
font_02_sfnt_off000095dc.bin
df8916dc0488248139c8b7f8575cdad52201066875df9eb3f38f8be7ce625b0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95DC 16076 bytes
font_03_sfnt_off0000aa8a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8A 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.