Malicious PDF — malware analysis report

Static analysis result for SHA-256 0611f1d20d758533…

MALICIOUS

PDF

42.2 KB Created: 2020-07-09 06:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14e40da0bd298905cfd9e72c959a8fe SHA-1: 74497217aee97e7a6bfded7782468e4a201fe1e4 SHA-256: 0611f1d20d758533503d8f45bcf37f94739ee958b31c703121106abc8590636e
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a high-confidence ML classification. The document body contains numerous embedded URLs, suggesting a link farm or phishing lure designed to redirect users to malicious sites. The ClamAV detection of 'Pdf.Dropper.Agent' further supports its role as a dropper for further malicious activity.

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.
  • ClamAV: Pdf.Dropper.Agent-9242552-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9242552-0
  • 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/wb?keyword=acs880-01%20hardware%20manual%20pdf
    • http://files.shop-black-moon.com/uploads/1/3/1/4/131409055/wagazalesofo_newepavewerediz.pdf
    • http://files.gabrielnavarrojr.com/uploads/1/3/0/8/130874501/682628.pdf
    • http://files.paradisekennelnb.ca/uploads/1/3/2/6/132681596/dadujixisawojo_miwaz_digam_megoxape.pdf
    • http://files.missjordansclassroom.com/uploads/1/3/0/7/130776841/5406440.pdf
    • http://files.learningessentialsnc.com/uploads/1/3/1/6/131636700/foxaxoluzujuzuruni.pdf
    • http://files.nancysniftynotes.com/uploads/1/3/1/3/131398253/9743245.pdf
    • http://files.brookekellyband.com/uploads/1/3/1/1/131163563/ab39a0d6c35.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://vurivul.files.wordpress.com/2020/06/41965796522.pdf
    • https://raxoxatubu.files.wordpress.com/2020/06/rukuli.pdf
    • https://sedawavurete.files.wordpress.com/2020/06/zenij.pdf
    • https://fakesuni.files.wordpress.com/2020/07/8642153592.pdf
    • https://fibozawo.files.wordpress.com/2020/06/depojovumisafupidokibub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tivaluzisezulumavolo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.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_off00005d1e.bin
ceb6f7036fad4ea9431586fda0670793b284914c2cb81ec2e61a5a5601cd1a66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1E 5540 bytes
font_01_sfnt_off00006fd5.bin
082be22aea14292d4568d574b4ee5b271266d00f35c721fd8d2d224a9caa05b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD5 14332 bytes

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