Malicious PDF — malware analysis report

Static analysis result for SHA-256 33739d0902dc64b3…

MALICIOUS

PDF

45.0 KB Authoring application: Inkscape
MD5: 7b7b27f506eb72603b690df741912cdc SHA-1: 4e0fcf5591bad29c089235b6ba98f3bf7a507abb SHA-256: 33739d0902dc64b3a06c2c26cb8ef9a151964b5bd0050e58a7992a3c3ecd1940
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, forming a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates that these links are intended to redirect users to other PDF files, likely for phishing or malware distribution. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious intent. No scripts were extracted from this sample.

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://oakleykambel.com/uploads/1/3/0/6/130639423/xeraxojomidi.pdf
    • http://shoretvohio.com/uploads/1/3/0/6/130605278/2789a510055b.pdf
    • http://jezi.edinsoncastro.com/uploads/2020/01/27/6444634.pdf
    • http://nuditosytrapitos.com/uploads/1/3/0/2/130287269/0868172c4783f5.pdf
    • http://xppost.com/uploads/1/3/0/6/130603888/zozuwuxez-jaborej-xovanasijuvej-mofegaruk.pdf
    • http://fbcnewton.net/uploads/1/3/0/4/130476039/abd1b.pdf
    • http://sakadox.giktarin.ru/uploads/2020/01/29/06968c932950.pdf
    • http://phruksathaispa.co/uploads/1/3/0/6/130604551/9606361.pdf
    • http://carpetcleanerwaukesha.com/uploads/1/3/0/3/130379389/f95159ce.pdf
    • http://ecceko.net/uploads/1/3/0/2/130289676/lodojazidadof.pdf
    • http://mindforyou.org/uploads/1/3/0/2/130272270/130272270.html#weider+pro+6900+exercise+guide

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001263.bin
223cce29493a62a8efcb1f550ebe4de100a917228242321361da684601af65c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1263 8512 bytes
font_01_sfnt_off000068e2.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E2 16268 bytes

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