Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06230988708b877…

MALICIOUS

PDF

42.7 KB Created: 2020-03-29 02:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c49b5b1ba713f384eb5f8db8b0cdf74d SHA-1: b2c8a3008d1ada2f864d53b6f8fc37ec141b283c SHA-256: e06230988708b87793b48f7a08dd24a230a1c7daef9b96e58223e5efa8e297cf
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many pointing to unrelated domains, suggesting a link farm or SEO abuse tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains references to 'Possessive nouns exercises with answers pdf' and embedded URLs, indicating a lure to external content. The primary attack pattern involves redirecting users to potentially malicious websites hosted on compromised or attacker-controlled domains.

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://74-123-77-80.mgwnet.com/uploads/1/3/0/2/130274316/130274316.html#possessive+nouns+exercises+with+answers+pdf
    • http://sereniteboutique.com/uploads/1/3/0/6/130639462/d9c69c2c548f5bf.pdf
    • http://www.kristinbrzeski.com/uploads/1/3/0/5/130539691/kibatuw.pdf
    • http://www.antmacgroup.com/uploads/1/3/0/6/130604951/8390508.pdf
    • http://jandjautismcoalition.org/uploads/1/3/0/2/130287454/foluvumilakuwerame.pdf
    • http://mrseamands.com/uploads/1/3/0/2/130270781/1b74f5d89db81.pdf
    • http://wyerivertreehouse.com/uploads/1/3/0/5/130551386/supapegogarovaw.pdf
    • http://horn-comb.com/uploads/1/3/0/4/130476574/4df768bb1a9.pdf
    • http://greenwichunderground.org/uploads/1/3/0/6/130604287/3956965.pdf
    • http://artsyhouse.net/uploads/1/3/0/6/130603946/gumuwadujomef.pdf
    • http://madeinmokena.com/uploads/1/3/0/7/130738956/fawobezu.pdf
    • http://creatingthyme.com/uploads/1/3/0/5/130546076/2110026.pdf
    • http://goldcoastasbestosremoval.com/uploads/1/3/0/5/130547624/kufipaje_rajitumejelaxon_nidarareduxop_bobon.pdf
    • http://www.mark-amber.com/uploads/1/3/0/2/130274028/remirekudovesebe.pdf
    • http://teamcsgaming.com/uploads/1/3/0/2/130272591/ba7a8d.pdf
    • http://bobodigitalmarketing.com/uploads/1/3/0/5/130543006/3990520.pdf
    • http://slideshowandtell.com/uploads/1/3/0/9/130968992/mixufixivodazo_wikefasu_rewuxo_lelorefez.pdf
    • http://porthuronstorage.com/uploads/1/3/1/1/131163640/felomudadabisop-kodenevuz-mipigulijaf-pafixinopi.pdf
    • http://pgcinternational.net/uploads/1/3/0/5/130540116/05b06e4e.pdf
    • http://dragonflyproductions.biz/uploads/1/3/0/5/130544257/6796134.pdf
    • http://carapacifico.com/uploads/1/3/0/6/130604213/sedev-kezokunozupo-fawopimudome-safazanonojob.pdf
    • http://www.911bodyrescue.com/uploads/1/3/0/2/130287533/bonaxefaxawobowonom.pdf
    • http://crc2016.com/uploads/1/3/0/2/130288361/5072483.pdf
    • http://uepcuix.sites.looka.com/uploads/1/3/0/8/130874371/39b53c6d18e14.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_off00007e17.bin
a9327da1ea04435afa673779c4b1b63c48cec2763f1e832188d0d45e1138291e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E17 7964 bytes

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