Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd75729f1bd776c0…

MALICIOUS

PDF

42.2 KB Authoring application: Karbon
MD5: f3de4f470ef04f9be48e6ac5fa2820a3 SHA-1: 834aeae93a84de70ae4775efaf30dbb32990584e SHA-256: cd75729f1bd776c0917d92b3d0161062916b327570c98441acc3502115c1d17f
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning model with high confidence. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, with the first URL being http://coachesportivo.com/uploads/2020/01/28/97dac2b3db.pdf. This suggests the document's primary purpose is to redirect users to numerous other potentially malicious PDF files hosted on various domains, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://coachesportivo.com/uploads/2020/01/28/97dac2b3db.pdf
    • http://sax.vr-journal.ru/uploads/2020/01/28/fizopakunada-revibukanegapan-tuzoregilulule.pdf
    • http://miatv.us/uploads/1/3/0/6/130639275/terinamagovep-taniguwef-bonukudupa.pdf
    • https://dexudojobovif.weebly.com/uploads/1/3/0/4/130483770/fuwumobusupapof.pdf
    • http://nadinebrockel.de/uploads/1/3/0/6/130620561/balomuxozu.pdf
    • http://laurenvanmullem.com/uploads/1/3/0/5/130551864/4b9cc5.pdf
    • http://translatorquote.com/uploads/1/3/0/3/130323817/699c82.pdf
    • http://hikeintohistory.org/uploads/1/3/0/5/130551967/dixipoxil-terunipag-mofodox.pdf
    • http://yessicafandinofiore.com/uploads/1/3/0/3/130323113/7dea5a53444.pdf
    • http://alleylitke.com/uploads/1/3/0/6/130622058/4965072.pdf
    • http://aucklandpolo.com/uploads/1/3/0/5/130588239/9033503.pdf
    • http://miracleinabucket.com/uploads/1/3/0/3/130379183/130379183.html#vizio+watchfree+guide

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132f.bin
cce00067c06351e03f3b2438fda3cc9440c37d6050f8e05e4e5471ea4dc2017a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132F 8732 bytes
font_01_sfnt_off00005d90.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D90 16268 bytes

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