Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbf338bf533293eb…

MALICIOUS

PDF

34.9 KB Created: 2020-03-20 10:38:38 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 278aa21e5ed035b2865396fdccfd33c2 SHA-1: 94ce2d680295e7d4170b8f5f32ce1b3977c6b625 SHA-256: dbf338bf533293eb459473223f5134adfaed9f33a67d0d5ddf788e7cdb905cd4
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a URL that appears to be a lure. The primary function of this document seems to be directing users to a network of external websites, likely for SEO spam or to host further malicious content.

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://davidmarquesibanez.com/uploads/1/3/0/6/130620796/130620796.html#husky+air+compressor+4+gallon+155+psi+1.5+hp
    • http://nevadarapidcash.com/uploads/1/3/0/8/130874470/jififepa-mawoveselov.pdf
    • http://playlearnchange.com/uploads/1/3/0/5/130589402/nufofeb.pdf
    • http://hostmaster.creative-economy-africa.org.uk/uploads/1/3/0/7/130739399/3471051.pdf
    • http://cafezesta.com/uploads/1/3/0/6/130620791/tipajufitaruvana.pdf
    • http://brandingspell.com/uploads/1/3/0/8/130874143/6977a.pdf
    • http://cancella.com/uploads/1/3/0/8/130873863/4385869.pdf
    • http://thesageoftime.com/uploads/1/3/0/8/130813399/puxuwu.pdf
    • http://3wombatspublishing.com/uploads/1/3/0/2/130287307/jifemako.pdf
    • http://artoftouchspa.com/uploads/1/3/0/2/130291996/fetexosuwekonu_belunakexavot_nuvalutelibesu.pdf
    • http://www.crimefighters.net/uploads/1/3/0/2/130287513/5582463.pdf
    • http://tedmakes.com/uploads/1/3/0/6/130604583/suxakos.pdf
    • http://collaborativetrainerswaterloo.com/uploads/1/3/0/4/130435784/rejofemu.pdf
    • http://sendshittomyenemy.com/uploads/1/3/0/7/130738875/legotug-sobokenakew.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_off000060dd.bin
2bb1e3a49c4d37f448bf2335480446bdd5d2c99587cfbe97acc28e2eab73577b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DD 7588 bytes

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