Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e222a16fa041ed3…

MALICIOUS

PDF

38.5 KB Created: 2020-05-14 02:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2081e7e14c451cdad1bd879cf81fa3cc SHA-1: 50ea88fab5e82cc136483a5e953ef6c469a7e4d1 SHA-256: 7e222a16fa041ed308af7968b8127ce424d81fc2adbf1cd8b1fa6edbd30ec41f
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are numerically and generically named, suggesting a link farm or SEO abuse tactic. The document body, though malformed, contains a URL related to deleting software, which is likely a lure to direct users to malicious or scam websites. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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://victoriasaesthetics.net/uploads/1/3/0/9/130969555/130969555.html#how+to+delete+amazon+assistant+android
    • http://mortonsruthcircle.com/uploads/1/3/1/3/131384121/4580602.pdf
    • http://afewof.net/uploads/1/3/0/2/130274199/4819593.pdf
    • http://brocktonelectricians.com/uploads/1/3/0/7/130738885/8117994.pdf
    • http://reconnect-with-yourself.com/uploads/1/3/1/4/131453230/5311225.pdf
    • http://georgiaonsiteservices.com/uploads/1/3/0/5/130590658/zatarivir.pdf
    • http://kevinsjobe.com/uploads/1/3/0/5/130540823/wodubiguzu.pdf
    • http://charliesopentalk.com/uploads/1/3/0/8/130874360/nujifenilujeket_tovekopazamanuv_goparajire_wunaku.pdf
    • http://americasautoadvice.com/uploads/1/3/1/3/131378838/mivivukodavuz.pdf
    • http://bradburyclothingco.com/uploads/1/3/1/4/131453208/5836657.pdf
    • http://odor911.com/uploads/1/3/1/3/131383720/8263574.pdf
    • http://leesmeemetjufsmeer.com/uploads/1/3/0/2/130271226/konuwuxile_sepowewako.pdf
    • http://housemedialimited.com/uploads/1/3/1/4/131409170/zomopunewowi_rijeguxeso.pdf
    • http://drleesoowok.com/uploads/1/3/1/0/131070485/1152317.pdf
    • http://washingtonbusinessforclimateaction.com/uploads/1/3/0/5/130543261/pewixasixo_xoxaduvufexi_lalobepomik.pdf
    • http://nampaartgallery.com/uploads/1/3/0/5/130541837/bb11f77505c6.pdf
    • http://mhschangefoundation.org/uploads/1/3/0/7/130739654/7579497.pdf
    • http://ayerpac.org/uploads/1/3/0/7/130775378/728bd8.pdf
    • http://consultandcapital.com/uploads/1/3/0/7/130776485/sifakiresuron.pdf
    • http://httpdoctorblues.com/uploads/1/3/0/7/130739519/pozaxi-nakofajimibur.pdf
    • http://washingtonbusinessforclimateaction.com/uploads/1/3/0/5/130543261/pewixasixo_xo
    • 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_off00006b26.bin
382462598bcac5d077f21f86a2a7c4f2efa396293b79fe95f0a378862a072e49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B26 10196 bytes

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