Malicious PDF — malware analysis report

Static analysis result for SHA-256 58b0501b395908e7…

MALICIOUS

PDF

39.5 KB Created: 2020-08-01 23:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3d6084f7f54e1e52713030615d24de7 SHA-1: 04fc8f1fe9e2596eb96108e48c4c87e07fc952b5 SHA-256: 58b0501b395908e7a37dce25e2f56ff73ba64df043fced4fe5bb851b2fbb0e04
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=spectra+s1+manual+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve the ranking of malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=spectra+s1+manual+pdf
    • http://files.elementfloorco.com/uploads/1/3/0/7/130740130/9010609.pdf
    • http://files.akcentkafe.com/uploads/1/3/0/7/130775565/bebudotawu_zukinu_sesatofapajin.pdf
    • http://files.rustedacresoaps.com/uploads/1/3/0/7/130739651/c69467c9af039.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/repisuluvurirobub.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/gakasepedavebulo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7245/4807/files/sexazixejuwobadopinobu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/kokilejobapili.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/fefuwizowosadidawat.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/letivubividuxoda.pdf
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/36419003735.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/14234491458.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/bunofugafunenezamumeti.pdf
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/87288571657.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_off00005bc1.bin
7e012e52a40d6aaaf4d0b9a4944ad25c63b522e0ae26471a13ec60ba55c90883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC1 5456 bytes
font_01_sfnt_off00006e3b.bin
deec8bf826b5afbe88e42b8a80aca652515b1c232a2456f47505430a8a31c8ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 10444 bytes

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