Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ddf4f73191da407…

MALICIOUS

PDF

45.5 KB Created: 2020-09-09 22:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5234919cf853332f145684c1fc625819 SHA-1: 544629eae4fd2bd0b2137885dfb5d172561181e0 SHA-256: 0ddf4f73191da4077dabca3df21c5aa661ef72102dcd8c724d65d23677e2b769
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed to obscure the final destination. One critical heuristic identified a redirector link to 'ttraff.club', and another flagged the document as a link farm. The presence of a 'download button' lure further supports a malicious intent to redirect users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=android+16+pop+vinyl
    • http://files.justsaybeadz.com/uploads/1/3/0/7/130775458/rebefade.pdf
    • http://xewosoka.spiritwordchurch.co.uk/uploads/1/3/1/3/131383790/sebafogazagib.pdf
    • http://fizulil.synaesthesiajournal.com/uploads/1/3/1/1/131164250/2235d51967.pdf
    • http://files.machinetoolsrebuilt.com/uploads/1/3/0/7/130740158/wimamalataw-danuxexuti.pdf
    • http://files.thegintinbar.co.uk/uploads/1/3/0/8/130813921/kizizibu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/4712/4135/files/timeline_presentation_template_prezi.pdf
    • https://cdn.shopify.com/s/files/1/0464/7521/5000/files/nutuduvivumepudofejigipe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7208/5406/files/41909999658.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0605/files/sojirosoleneneva.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/escala_cromatica_saxo_alto.pdf
    • https://cdn.shopify.com/s/files/1/0437/7329/6789/files/luleraga.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/xonozanuvowonalubole.pdf
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/boxebirimunojisijazulo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8027/6375/files/suxovokanedizaziwo.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_off000069ef.bin
024ede73d0daf13f6f57c9c40f9edfa115442e7bca04509dc8e7d025a42114c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EF 4512 bytes
font_01_sfnt_off00007943.bin
6a1a8b543a9a119248cd3d51ef24d8349776e1029310337207ad5ec1b9f3db03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7943 9944 bytes
font_02_sfnt_off00009b38.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B38 4324 bytes

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