Malicious PDF — malware analysis report

Static analysis result for SHA-256 9812430dadbc8f9b…

MALICIOUS

PDF

38.2 KB Created: 2020-08-10 14:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae485f7991e7a824d6c2459d255c6bc6 SHA-1: ccd32f659467b1e7cdf91fc32412e62d4c9f8f47 SHA-256: 9812430dadbc8f9bde123df5a203ddc5a45a440e8b30ebd08dfb87d02f4b3e5c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a redirector, which is part of a link farm designed to host multiple PDFs. The primary malicious URL is https://ttraff.com/pify?keyword=model+cerere+de+angajare+pdf, which likely leads to a malicious payload. The document body text, though garbled, suggests a lure related to a job application, aligning with the malicious redirector's keyword. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=model+cerere+de+angajare+pdf
    • http://files.garretreich.com/uploads/1/3/1/3/131380730/pixome.pdf
    • http://files.rivendellmeadows.com/uploads/1/3/1/4/131454899/2081867.pdf
    • http://files.noellejkim.com/uploads/1/3/1/6/131607712/5285759.pdf
    • http://tepagon.stemcells4ultimatehealth.com/uploads/1/3/0/7/130776078/lafivomeguju.pdf
    • http://files.highflyerseducation.com/uploads/1/3/1/4/131453902/femaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevimija.pdf
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/xazejotiloko.pdf
    • https://cdn.shopify.com/s/files/1/0435/9634/9602/files/87290555307.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/949986333.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/fases_del_diagnostico_comunitario.pdf
    • https://cdn.shopify.com/s/files/1/0429/3804/0487/files/20909619573.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/55010677636.pdf
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/digukasimoxajazejav.pdf
    • https://cdn.shopify.com/s/files/1/0428/5916/7900/files/mckeague_trigonometry_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/kusizezemefafunoxijulim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/novorubafiwani.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056a4.bin
33c952641adfb0bf7e782a1e03060ae27005ce1c90dc56458ebea0fa8d2aee00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A4 5224 bytes
font_01_sfnt_off00006887.bin
c020ffb79fa4c081050a1fdc6fc112a6ba398300dff5ad2ef67278ac933ba8b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 10624 bytes

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