Malicious PDF — malware analysis report

Static analysis result for SHA-256 1022dafc9da7f6b3…

MALICIOUS

PDF

40.4 KB Created: 2020-03-09 07:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fe11c5c9ebb47add947f05961faffffe SHA-1: e118552ef0e7c2ca1f8a4e2b30034e827a2af3fe SHA-256: 1022dafc9da7f6b3d496e328624b012d4da2c282741c903bfdc9934955ad5c27
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The document body text and embedded URLs indicate a lure related to educational material ('10th maths formula book pdf') which is likely a pretext to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious document.

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://travelinalong.voyagerwebsites.com/uploads/1/3/0/7/130775261/130775261.html#10th+maths+formula+book+pdf
    • http://boltontrailscommittee.org/uploads/1/3/0/7/130775980/janasigefu-zoforaker-xunizaliko.pdf
    • http://melissachartier.net/uploads/1/3/0/4/130489055/mawazidurapisogepiwo.pdf
    • http://factofevolution.net/uploads/1/3/0/4/130478760/leraxif.pdf
    • http://accomozcontact.com/uploads/1/3/0/3/130379422/ecfb172.pdf
    • http://donmcqueenart.com/uploads/1/3/0/3/130379294/joxosidesoxor-vulitaregoko.pdf
    • http://americanproshop.us/uploads/1/3/0/2/130274304/jetazumeruri.pdf
    • http://mododucspiritum.com/uploads/1/3/0/3/130313632/5dfd4ea.pdf
    • http://spencertunickbooks.com/uploads/1/3/0/2/130272925/c77681.pdf
    • http://yourremaxteam.net/uploads/1/3/0/2/130287285/tetozidogojuki.pdf
    • http://socaljobs.net/uploads/1/3/0/4/130435553/satozevebeniduxuju.pdf
    • http://nikkibloomcreationz.com/uploads/1/3/0/5/130540725/aed62d9f8.pdf
    • http://organicbuddies.com/uploads/1/3/0/7/130775092/8415132.pdf
    • http://quartneibrown.com/uploads/1/3/0/3/130379070/fosewew-najiwu-jimetis.pdf
    • http://milkandhoney.care/uploads/1/3/0/4/130483396/rulivipiveto_nuvonek_petete_lidanul.pdf
    • http://www.silvervalleycampground.com/uploads/1/3/0/8/130813765/defejevuve_raxotevufafajun_lidoduroratis.pdf
    • http://www.thefrenchcomte.fr/uploads/1/3/0/5/130588811/kadusuvevuzatib.pdf
    • http://pogorings.com/uploads/1/3/0/7/130739328/wojejazorudejeloj.pdf
    • http://www.larrylovescannabis.com/uploads/1/3/0/7/130739265/396443b.pdf
    • http://salesale.space/uploads/1/3/0/5/130589214/495834.pdf
    • http://tycoonoffice.com/uploads/1/3/0/8/130874060/3dab1670.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_off000073a6.bin
58e8ea16b55196432c532c635d897acddfcfda15906e0d7587ce52a571ee3324		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A6 7984 bytes

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