Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cec8cd8c37ca4a…

MALICIOUS

PDF

49.6 KB Created: 2020-03-25 08:51:03 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 33f35ea3cac006f30c4f19c489aaa988 SHA-1: b3664aa2ae7311d3ad2814629491544eafca223b SHA-256: 06cec8cd8c37ca4ab4366eb37aeb1179ad1a9265e6d5824287fe9ba8450e5aa9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://kjmarketingconcepts.com/uploads/1/3/0/9/130969190/130969190.html#toshiba+d-kr10+manual
    • http://nataliadgrafica.com/uploads/1/3/0/2/130288684/datifesebi.pdf
    • http://www.dragsladen.com/uploads/1/3/0/4/130477201/36bc9e2.pdf
    • http://rmpmusicgroup.com/uploads/1/3/0/3/130323151/6e7ef1ef14a5a3.pdf
    • http://server.dyakcraft.com/uploads/1/3/0/6/130621068/c8a2e4ad5a6a96a.pdf
    • http://coalchristmas.us/uploads/1/3/0/4/130476885/e75a8a393.pdf
    • http://www.archersoftball.org/uploads/1/3/0/8/130873867/roxifino_sagumazo_bozek.pdf
    • http://www.nano-living-system.com/uploads/1/3/0/5/130588344/7670084.pdf
    • http://clarinnes.org/uploads/1/3/0/2/130271095/jubafozarage-muxikimefa.pdf
    • http://mx.staceyweckstein.biz/uploads/1/3/0/7/130775432/pilosevufepo.pdf
    • http://asgardpm.com/uploads/1/3/0/5/130588430/benepesogu-riseguwavil.pdf
    • http://allowaycarpentry.com/uploads/1/3/0/5/130543798/wuwagopefux-dizonobuj-juzatefufate-kedabajadako.pdf
    • http://penclubkc.com/uploads/1/3/0/8/130873820/ec370.pdf
    • http://amishalom.com/uploads/1/3/0/8/130813769/mutofubafolaw.pdf
    • http://lgductlessac.com/uploads/1/3/0/3/130313360/a757fc.pdf
    • http://thefoodvault.com/uploads/1/3/0/5/130551653/pejoxopisuwim.pdf
    • http://www.sanfranciscoghosthunt.com/uploads/1/3/0/4/130488812/gudefewe.pdf
    • http://74-123-77-66.mgwnet.com/uploads/1/3/0/7/130740065/fowebum.pdf
    • http://lionahazeleger.nl/uploads/1/3/0/5/130543468/8387778.pdf
    • http://tombtrippin.com/uploads/1/3/0/6/130604487/3828419.pdf
    • http://www.wheygold.net/uploads/1/3/1/0/131071209/814cba324.pdf
    • http://ltvfunding.com/uploads/1/3/0/4/130476183/nezukuxerosug.pdf
    • http://universityonlinedegree.info/uploads/1/3/0/3/130323806/33f83dacfe31927.pdf
    • http://www.unclesamssoftwashing.com/uploads/1/3/0/7/130774994/d929ced7536b5a.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_off000096cd.bin
f67272cdd001cbe6bda5ffa5f345a08ed246776215524f2a2de2a7c9d54a97dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96CD 8960 bytes

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