Malicious PDF — malware analysis report

Static analysis result for SHA-256 4168876dd07b0210…

MALICIOUS

PDF

49.1 KB Created: 2020-03-25 07:00:26 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c53f7a4c7d087c37d760f7ac2b5522bc SHA-1: d0ec667f5592ccb2b974e0d9db3613b1ee4a0970 SHA-256: 4168876dd07b0210a96a7dc73b2e6bd05680b9923c4e21688260b067f77356f5
94 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, suggests a lure related to 'supply chain management presentation slides'. The primary attack pattern involves directing the user to click on these numerous links, which are hosted on various domains and likely lead to malicious content or further compromise. 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://hyperion-ai.com/uploads/1/3/0/7/130775376/130775376.html#supply+chain+management+presentation+slides
    • http://cosmosit.net/uploads/1/3/0/7/130775259/03b607557cba20.pdf
    • http://woulibamrestaurant.com/uploads/1/3/0/2/130288399/sesuger-wafepejako-zovik-duvije.pdf
    • http://sistereducator.com/uploads/1/3/0/4/130436068/gitapafuwef.pdf
    • http://conforteconomico.com/uploads/1/3/0/6/130604841/5285323.pdf
    • http://hostmaster.learninglives.co.uk/uploads/1/3/0/8/130813881/wokimogas_gopafu.pdf
    • http://cafedonruiz.com/uploads/1/3/0/7/130740318/lijerafipekudosej.pdf
    • http://2624.dadgifts.us/uploads/1/3/0/6/130621959/6326361.pdf
    • http://fedcomtc.com/uploads/1/3/1/0/131071262/fd0cc8.pdf
    • http://tuckermaplefarm.com/uploads/1/3/0/2/130289242/4014199.pdf
    • http://www.vegasjunkmovers.com/uploads/1/3/0/6/130621645/62559.pdf
    • http://primalfootball.com/uploads/1/3/0/6/130620892/897c7802a71.pdf
    • http://nolaclay.com/uploads/1/3/0/8/130813582/rizobegesagago-bakugalezid-xoliziruzugafo.pdf
    • http://ibeautytansalon.com/uploads/1/3/0/2/130289270/buporowumo-palup-xupozudunevi.pdf
    • http://yumisong.com/uploads/1/3/0/4/130489075/nonepe-fivin-xizagolinafox.pdf
    • http://dancecoachmastercamp.com/uploads/1/3/0/6/130620603/6691514.pdf
    • http://clevelandtncrawlspaceencapsulations.com/uploads/1/3/0/4/130488414/4018485.pdf
    • http://paulakeogh.net/uploads/1/3/0/2/130289543/tewezibokunilumat.pdf
    • http://chessmatchonthepitch.com/uploads/1/3/0/4/130435715/1f842a61461d.pdf
    • http://tracedebug.com/uploads/1/3/0/7/130738996/7019f8.pdf
    • http://www.realtalkwithmaddie.com/uploads/1/3/0/2/130270834/0413594190234c3.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_off0000947f.bin
dc4ab424d2e396b350814c49dc9d04f71b9384c385848931be3cd5d5f8da5f51
pdf-font-stream PDF embedded font (sfnt) at offset 0x947F 8976 bytes