Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed28ce77d0c592e…

MALICIOUS

PDF

36.1 KB Created: 2020-03-29 04:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 133fe875ecda1aa892c8775df8763425 SHA-1: 2b207e884956ff5613844d3dcb91fdebda68dedf SHA-256: fed28ce77d0c592ef0521ac28371e0db59a9f2838062233ecd86eed3d53133d9
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, flagged as a PDF_SEO_LINK_FARM, indicating a likely attempt to drive traffic to malicious or phishing sites. The ML classifier also strongly indicated maliciousness. The document body text, though garbled, contains a URL that matches one of the extracted links, suggesting the links are the primary payload delivery mechanism.

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://74-123-76-25.mgwnet.com/uploads/1/3/0/7/130775260/130775260.html#rubbermaid+reveal+spray+mop+how+to+remove+bottle
    • http://mta-sts.mx.binksgames.com/uploads/1/3/0/6/130620854/7462565.pdf
    • http://thorsgardbook.com/uploads/1/3/0/2/130270937/vimaxe.pdf
    • http://psyneways.com/uploads/1/3/0/5/130588843/5bafee.pdf
    • http://innermomologue.com/uploads/1/3/0/7/130739968/wirewamubatu.pdf
    • http://teamscentseh.com/uploads/1/3/1/0/131071082/wigodazu_bumanujo.pdf
    • http://milarillc.net/uploads/1/3/0/3/130323567/5e9f29493a4ba.pdf
    • http://chelseakinser.com/uploads/1/3/0/5/130588151/lonanituwiba.pdf
    • http://www.dhatibovic.info/uploads/1/3/0/3/130313053/penamikokosabelipag.pdf
    • http://everywitchway.org/uploads/1/3/0/6/130639641/rukip.pdf
    • http://nottynightysarea51.com/uploads/1/3/0/6/130620402/fogibitex-sadeneraseje-kelutovalago.pdf
    • http://555-jeudirouge.fr/uploads/1/3/1/3/131398052/fubovezajak_gomonererex_zawufatoxa_gitifowamuxuti.pdf
    • http://deltocororo.com/uploads/1/3/0/2/130291908/264a7b6158c52.pdf
    • http://masazgorzym.pl/uploads/1/3/0/4/130476589/180b4ee524.pdf
    • http://hoffnagledesign.com/uploads/1/3/0/2/130289557/3492073.pdf
    • http://time2focus.net/uploads/1/3/0/5/130590143/giluvoxudop.pdf
    • http://watchingart.com/uploads/1/3/0/2/130272260/faec020daa5fa47.pdf
    • http://www.themainsourcemedia.com/uploads/1/3/0/6/130604549/zozozuwoj_kimafan_naxokikosexafi.pdf
    • http://apietrantoni.com/uploads/1/3/0/9/130969571/nomami_nivinivezekutaf_lofogirusigike.pdf
    • http://rudingantengdarilahir.com/uploads/1/3/0/5/130538987/8412472.pdf
    • http://lucasgarron.net/uploads/1/3/0/5/130588419/gajejexerugubawe.pdf
    • http://atomic-puppy.com/uploads/1/3/0/3/130323491/vekokujeripejas-wuvadalumodaj.pdf
    • http://www.jsoporifice.net/uploads/1/3/0/7/130738876/zabamufutidejisotar.pdf
    • http://advancedpaintpreparation.net.au/uploads/1/3/0/7/130739238/1362461.pdf
    • http://zducation.com/uploads/1/3/0/5/130539238/silawavamunar-sinoxaxol-lalinavetep.pdf
    • http://luxbeauty.com.au/uploads/1/3/0/8/130874511/linodewota.pdf
    • http://advancedpaintpreparation.net.au/upload
    • 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_off000065e5.bin
cd839322cc60217bf4d3326016b59498d132432b89e43528eb8e0a4d1664dc77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 7236 bytes

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