Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60e560eef9baf63…

MALICIOUS

PDF

40.7 KB Created: 2020-03-29 05:51:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ceec6124563e27d173126262d975daf0 SHA-1: 8f33a72d0e079fbbe709ae668630f0c790265057 SHA-256: f60e560eef9baf63023c598e4375daa899da9c5930ab2ffae371810d33c9724b
94 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The document body, though partially corrupted, includes a title about using a TI-89 calculator for calculus, which appears to be a lure to disguise the malicious nature of the embedded links. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a large number of external links.

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://host37.carmichaelnl.com/uploads/1/3/0/4/130476172/130476172.html#how+to+use+a+ti-89+titanium+for+calculus
    • http://4upms.com/uploads/1/3/0/5/130550789/e80ea9a3c.pdf
    • http://advantageamerica.info/uploads/1/3/0/3/130379921/razipenumuv_wizezefufam.pdf
    • http://kimkerrmft.com/uploads/1/3/0/8/130873944/limagok_turotapox_xowives.pdf
    • http://footballcollectible.org/uploads/1/3/0/2/130288468/joxiju.pdf
    • http://folsomlandscapedesign.com/uploads/1/3/0/5/130539992/bawolidej_wobafubo.pdf
    • http://sophiesstores.com/uploads/1/3/0/9/130969235/napijaxoso.pdf
    • http://authenticitythrives.net/uploads/1/3/0/6/130620917/6e0330373c9b92.pdf
    • http://campaspeeducationalpartners.com.au/uploads/1/3/0/7/130739253/luferu.pdf
    • http://nailsbyjaz.com/uploads/1/3/0/7/130740077/7d361.pdf
    • http://cessauctions.com/uploads/1/3/0/6/130621178/wivetoro.pdf
    • http://synthetics78.com/uploads/1/3/0/6/130639709/3534592.pdf
    • http://the-traders-journal.com/uploads/1/3/0/9/130969137/5706200.pdf
    • http://lauraelizabethphotographync.com/uploads/1/3/0/5/130550704/4a226703955dd.pdf
    • http://estateplanninglawyerinhouston.com/uploads/1/3/0/8/130874518/6890131.pdf
    • http://74-123-79-163.mgwnet.com/uploads/1/3/0/8/130873759/tulazo.pdf
    • http://medlakelabrep.com/uploads/1/3/0/5/130588424/nemiz-wugum-ripatokanemamaw-foxowogoguba.pdf
    • http://mothermedicina.com/uploads/1/3/0/7/130776526/289b23.pdf
    • http://www.perfectlychaoticwithdani.com/uploads/1/3/0/3/130323115/1356870.pdf
    • http://agelessiq.com/uploads/1/3/0/4/130476511/wapugimovajawokoxes.pdf
    • http://poseidons-rr.com/uploads/1/3/0/5/130539357/8975608.pdf
    • http://shetlanddesigner.com/uploads/1/3/0/2/130273799/limorinegabuna.pdf
    • http://rent2buykelowna.com/uploads/1/3/0/4/130488810/divaw_midumaba_jamovevet.pdf
    • http://mekondo.com/uploads/1/3/0/7/130739758/66b67176.pdf
    • http://sunnydoggrooming.com/uploads/1/3/0/5/130540397/dogovulopututukuku.pdf
    • http://sunnydoggrooming.com/u
    • 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_off000075d7.bin
435a10f035dbe10cd290767b472a6fac8c2b5c37a902f22646c7de43c1df009b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D7 7976 bytes

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