Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2cadab1e3f208ad…

MALICIOUS

PDF

40.5 KB Created: 2020-04-03 14:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ce2d5f5a12652bb1a10abfa7dbe7156e SHA-1: 51736fed67279550416bbf0b02671e83d5336ada SHA-256: d2cadab1e3f208ad5f0398ec99932b375ee8a7a9d6b67d5626fef8c3b471a661
94 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The primary purpose appears to be directing users to a network of websites, likely for SEO spam or to host further malicious content, rather than delivering a direct exploit.

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://highfieldproperty.org/uploads/1/3/0/3/130379347/130379347.html#configuracion+electronica+desarrollada+de+oro
    • http://junkremovalprosflagstaff.com/uploads/1/3/0/8/130874678/9507776.pdf
    • http://gdseditorialservices.com/uploads/1/3/0/5/130550833/6246351.pdf
    • http://esgrotextil.com/uploads/1/3/0/5/130542936/refafipad-bulixurexetamim-zijosaje-lomudozotanined.pdf
    • http://nanamom.org/uploads/1/3/0/6/130621857/sifisibuterikak.pdf
    • http://browngirlfearless.com/uploads/1/3/1/3/131381521/rajugonitoxadej.pdf
    • http://stoller-handwerkservice.ch/uploads/1/3/1/3/131379629/237532e424bce78.pdf
    • http://sawscience.com/uploads/1/3/0/8/130874620/183717ea.pdf
    • http://methodalliance.org/uploads/1/3/0/5/130550914/xumimitam.pdf
    • http://cambriscottage.com/uploads/1/3/0/6/130620423/824569bb4a6.pdf
    • http://batteryparkschool.com/uploads/1/3/0/6/130620581/2461816.pdf
    • http://kaseyscottmusic.com/uploads/1/3/1/3/131398066/a89cfbe5c83b.pdf
    • http://greatmindsed.com/uploads/1/3/0/2/130289235/b573f8f.pdf
    • http://graciusphoto.com/uploads/1/3/0/5/130545985/jetubotowenuz.pdf
    • http://phxisrising.org/uploads/1/3/1/1/131164455/5606386.pdf
    • http://jecliban.com/uploads/1/3/0/7/130776167/70e4dac5.pdf
    • http://ultimatepaintandtrim.com/uploads/1/3/0/5/130590308/jefudajasi-gekobemapan-kixuzo.pdf
    • http://lonnyelitehomes.com/uploads/1/3/0/4/130477541/beeffca.pdf
    • http://kriscloketeaching.com/uploads/1/3/0/5/130551323/xafuximatitara.pdf
    • http://autoled.co/uploads/1/3/0/7/130739059/c96a16c7cb.pdf
    • http://tinytoypoodlepuppies.com/uploads/1/3/0/6/130621740/7399050.pdf
    • http://www.jamesbaylee.com/uploads/1/3/0/4/130435631/8287523.pdf
    • http://thecivilreview.com/uploads/1/3/0/8/130874573/7893668.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_off000072e2.bin
4fdb9a34f4127fb2e2eacc42a76e7baf71fd1eceecab3bcf2a04c7646fc4ca7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E2 8536 bytes

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