Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d0d6e52081aa96…

MALICIOUS

PDF

60.2 KB Created: 2020-08-21 07:42:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ad46f4b3b88dde2c14073e957630e93 SHA-1: 4476111fa06f080df6c39c7b65049921c90a4da3 SHA-256: 43d0d6e52081aa96a15085d49713b23cc88533d2c3c275ac3ab1ca58f95937a8
150 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains text related to 'electrician work experience certificate format pdf', suggesting a social engineering lure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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.com/pify?keyword=electrician+work+experience+certificate+format+pdf
    • http://luzukudax.laraffinerie-sg.com/uploads/1/3/0/8/130813528/bidigofigewabosise.pdf
    • http://files.johnmorrispiano.com/uploads/1/3/1/3/131384635/zelorawopizitose.pdf
    • https://cdn.shopify.com/s/files/1/0437/6880/7578/files/development_lotteries_board_annual_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/79589621581.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/aminoacidos_libro.pdf
    • https://cdn.shopify.com/s/files/1/0439/9464/4638/files/analytical_reasoning_tips.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/ncert_class_9_biology_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/5306/3063/files/xenekuwozavirag.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8059/files/49861097255.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a4a5.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A5 2828 bytes
font_01_sfnt_off0000ae9f.bin
d2e3027b810a0307fd203cd31fab0d954e91e3475162f6d64dee87af7f5eb2e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9F 5304 bytes
font_02_sfnt_off0000c0a0.bin
77a7a4c26e97b3dc36eb2154e8f9fefc659c0d49635b7e850081d5e1bdf44271		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0A0 10112 bytes

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