Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ebbfc496d6b6aa2…

MALICIOUS

PDF

37.1 KB Created: 2020-05-22 07:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f25ded7067aaee41902c19db8dea3da SHA-1: 956f9f0167626b29f0cb83213bc210a16393ef01 SHA-256: 2ebbfc496d6b6aa261835d8dac53bd06c96573f7d75e5630d2ffa308f851472b
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The primary URL, http://74-123-76-199.mgwnet.com/uploads/1/3/1/3/131384305/131384305.html#john+deere+gator+tx+parts, suggests a lure related to John Deere parts. The ML classifier strongly indicates maliciousness. The document body, though partially corrupted, also contains these URLs, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://74-123-76-199.mgwnet.com/uploads/1/3/1/3/131384305/131384305.html#john+deere+gator+tx+parts
    • http://schmidt-m.com/uploads/1/3/0/9/130969186/novuwapuvuxani-netigibopofem.pdf
    • http://codebyrd.com/uploads/1/3/0/8/130873843/lakoloxa-nuzetefofupera-disuf.pdf
    • http://aciduladoslatapatia.com/uploads/1/3/1/3/131384414/latamovorujetujawas.pdf
    • http://mercifulrecoveryservices.net/uploads/1/3/0/6/130639246/nogoxoli.pdf
    • http://fruitymuncher.com/uploads/1/3/0/5/130550911/8946178.pdf
    • http://singasongfighter.com/uploads/1/3/1/4/131452872/rumoli_pidorutapobek.pdf
    • http://royalclassictravel.com/uploads/1/3/1/3/131380612/dixewebusod-xobitifoden-kulavirunevotis-kuxorudaji.pdf
    • http://geekspot.ca/uploads/1/3/0/7/130775974/1484254.pdf
    • http://tomthetuor.com/uploads/1/3/0/6/130603704/zoxanofoxu.pdf
    • http://4d.undesirable.us/uploads/1/3/1/3/131398094/c0a1fb16135.pdf
    • http://spiritualeclipse.com/uploads/1/3/0/4/130436242/xozavizixipepux-nidibowagowone.pdf
    • http://houseofindependents.us/uploads/1/3/0/6/130621782/1197625.pdf
    • http://mx.bayardguitars.com/uploads/1/3/1/4/131438167/modalakikolatojug.pdf
    • http://warmcabins.com/uploads/1/3/0/5/130540664/gepagozeg.pdf
    • http://millersisters.net/uploads/1/3/1/1/131164311/987fd6a1a4.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006400.bin
70aa5fbf1ebd71ae46767c3a88499230baa85c57aa47b8588240bd1bc1b798c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 10348 bytes

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