Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd06abd834270c21…

MALICIOUS

PDF

33.9 KB Created: 2020-03-07 18:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: da83640501580e43e1fceae659738583 SHA-1: 96506d8d6fde7e47f1306575714180ed61585b07 SHA-256: bd06abd834270c217637913b89f2dcdd5157e05aa4019d4fd4b7f2342572637b
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to a vast collection of external PDF files, likely to distribute malware or engage in SEO spam. No scripts were extracted from this sample.

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://host197.carmichaelnl.com/uploads/1/3/0/6/130639926/130639926.html#ada+standards+2019+pdf
    • http://www.newdawnrising.org/uploads/1/3/0/4/130483265/d0c42.pdf
    • http://www.justasmallchapter.com/uploads/1/3/0/5/130540172/talisowotu-wevidinobuze-teludewi.pdf
    • http://nancyjmiller.net/uploads/1/3/0/5/130538997/a1ffae003f.pdf
    • http://subacutelogisticscorp.net/uploads/1/3/0/4/130436020/dufidiz.pdf
    • http://amyeschlimanteachingportfolio.com/uploads/1/3/0/5/130538817/dopiwadoma.pdf
    • http://borocreditrepair.com/uploads/1/3/0/6/130639936/jokexoz.pdf
    • http://sophieandbenadventures.com/uploads/1/3/0/2/130272851/dc1eb.pdf
    • http://oddlyspecificshirts.com/uploads/1/3/0/5/130540366/tupalagonafukeb.pdf
    • http://allberta.com/uploads/1/3/0/6/130621309/wagusuxuvedeb.pdf
    • http://ccaabasketball.org/uploads/1/3/0/7/130740572/duzinetip.pdf
    • http://silva-realty.com/uploads/1/3/0/7/130776068/6670647.pdf
    • http://hmsyearbook.com/uploads/1/3/0/8/130814298/235d46a39c7f22.pdf
    • http://sdlasertech.com/uploads/1/3/0/6/130604333/jakaf_kalep_gunikun.pdf
    • http://laureltreehill.org/uploads/1/3/0/3/130379902/77fd5290c4.pdf
    • http://karenvankampen.com/uploads/1/3/0/4/130478551/poweku.pdf
    • http://townofclermont.com/uploads/1/3/0/7/130776826/3aa0c8.pdf
    • http://stevematzen.com/uploads/1/3/0/2/130289523/99939c47bd19d.pdf
    • http://estadosdepagos.com/uploads/1/3/0/6/130604618/tameba.pdf
    • http://moneytalkwithtiff.com/uploads/1/3/0/5/130588675/dexizapoziwelusapamu.pdf
    • http://rmtdesigngroup.com/uploads/1/3/0/7/130738553/gubivirubidilul_tapixefemig_bozofozudamuj.pdf
    • http://galits.com/uploads/1/3/0/9/130969085/93192770.pdf
    • http://maruthomeimprovement.com/uploads/1/3/0/6/130621584/ruzikem.pdf
    • http://forthepits.com/uploads/1/3/0/3/130379415/gudapogu_kesofigala_nuravuset.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_off0000602b.bin
b46be94261937e841a75301cf01a52c568043fa857dbe7a1ae1abda84de9da3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602B 6372 bytes

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