Malicious PDF — malware analysis report

Static analysis result for SHA-256 02328c244fe4fb84…

MALICIOUS

PDF

41.3 KB Created: 2020-03-21 02:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 74dd82db876045ff40dc015e8d4dddee SHA-1: 8435438c877cccbb12dd973fb972df53a80714eb SHA-256: 02328c244fe4fb84340ea9cb7f87fcb6efdf8200a4fcbfc49e901830b59a2bf4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links to other PDF files hosted across numerous domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs confirms the intent to redirect the user. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to manipulate search results or distribute payloads.

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://misssoutheastpageantry.us/uploads/1/3/0/6/130639161/130639161.html#ser+vs+estar+chart
    • http://vantagetactical.net/uploads/1/3/0/7/130775786/6ab94846bc.pdf
    • http://newageoflight.com/uploads/1/3/0/3/130324351/sojowafixusowupun.pdf
    • http://millark.net/uploads/1/3/0/5/130588550/e9edf1c3be52.pdf
    • http://artbybelen.com/uploads/1/3/0/4/130489023/bazowiramunu-busufudas-garufusaj-gubeda.pdf
    • http://doverfirstsda.com/uploads/1/3/0/3/130323196/razogukuturuvi.pdf
    • http://www.corinnebradleymsn.com/uploads/1/3/0/7/130775267/51cd37b6d5cec5.pdf
    • http://rascomgreenbuildservices.com/uploads/1/3/0/4/130435659/2575830.pdf
    • http://greystarre.com/uploads/1/3/0/2/130289173/28f028.pdf
    • http://mta-sts.mail.willbardenwerper.com/uploads/1/3/0/5/130589285/3911779.pdf
    • http://www.adoseofana.com/uploads/1/3/0/5/130550742/rutonewipigotod_jotup.pdf
    • http://breadandboots.com/uploads/1/3/0/4/130476102/2061c8daf6d.pdf
    • http://airnowli.com/uploads/1/3/0/2/130289663/kirupaxatipowid.pdf
    • http://101taiwantour.com/uploads/1/3/0/7/130775543/lujizitobuw.pdf
    • http://heros.solutions/uploads/1/3/0/8/130813453/3209824.pdf
    • http://hostmaster.thewidg.com/uploads/1/3/0/7/130739887/wamore.pdf
    • http://newcreationstherapy.net/uploads/1/3/0/8/130874265/balez.pdf
    • http://jonijohnston.com/uploads/1/3/0/7/130740244/lidomusedo.pdf
    • http://pickapassword.com/uploads/1/3/0/8/130814993/likevili-nejuronera-zakosux-lujed.pdf
    • http://housetagger.com/uploads/1/3/0/2/130271232/ritidomaxew-pomekexetetipej-fovupejapoz.pdf
    • http://pedicab.dk/uploads/1/3/0/9/130969946/fofukaderis-sutilogefepej-goxobog.pdf
    • http://playhousewestartsfoundation.org/uploads/1/3/0/5/130542920/7196414.pdf
    • http://naturalhand.net/uploads/1/3/0/5/130589998/8346844.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_off00007513.bin
0c9c33dcc15a93bab2c6f7b616034ea773bffc014032d1ac048642dbcb6a842d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7513 9192 bytes

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