Malicious PDF — malware analysis report

Static analysis result for SHA-256 72241549cf869039…

MALICIOUS

PDF

39.5 KB Created: 2020-08-14 21:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 880d1c89b6c7e08a12ab3e635d5a14e1 SHA-1: 89d3b2cf5f61cfc5133ecee7223e69c90efab7d2 SHA-256: 72241549cf869039d3d5aa991c4116b2325eb1aa0a58c90a59c1192dd6d424c1
162 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent link, 'https://ttraff.ru/pify?keyword=headed+paper+design+template', is identified as a malicious redirector. The presence of a 'download button' heuristic further suggests a lure to trick users into clicking these malicious links, likely to download a secondary payload or redirect to a phishing site.

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.ru/pify?keyword=headed+paper+design+template
    • http://vokanox.talltechteacher.com/uploads/1/3/2/3/132303382/vojobofok-juxobegoromut-gazol-gevepakilaloro.pdf
    • http://files.dodgersenate.org/uploads/1/3/2/7/132740949/ea7d5009fff.pdf
    • http://files.noeleencosgrovemusic.com/uploads/1/3/1/8/131856279/6818246.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8491/4583/files/pawomafokapekulilenusoli.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/country_way_sprayer.pdf
    • https://cdn.shopify.com/s/files/1/0434/3257/5132/files/sokolizakefowegidexam.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/sofudeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4966/files/pawobenogulisif.pdf
    • https://cdn.shopify.com/s/files/1/0434/6046/0706/files/rizisodefatabadek.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/55382086277.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4585/files/kuxojuradefedowila.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/rufafomadulepepopavorev.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7606/files/lajororuwasi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d07.bin
464f1c9a0870e43644f0f65ea685cb6b76acb4a3414c32c539ee2099d8962b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D07 5240 bytes
font_01_sfnt_off00006eb8.bin
5dfef1f570e8a726fa7751cdf89422d87bf6c5f8499c214dade21351dd2099f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB8 10192 bytes

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