Malicious PDF — malware analysis report

Static analysis result for SHA-256 43edc3b46598a1b4…

MALICIOUS

PDF

48.1 KB Authoring application: SWFTools
MD5: 614cb3d596f11ec2712d93451df09fbc SHA-1: 5adc8362732f3aa3696bf055807fad5395456bff SHA-256: 43edc3b46598a1b4d1748c70c9468513f05937ae2fb8626f1d75f9ee29ae6382
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 external links, a technique commonly used for SEO poisoning and phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The document body itself is heavily obfuscated but contains references to URLs that are also listed in the embedded URL heuristic.

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://arcticlimo.com/uploads/1/3/0/4/130483276/vaxiwo.pdf
    • http://bupupof.igrovye-avtomaty-na-dengi.top/uploads/2020/01/28/migezurato.pdf
    • http://derekjohnson3d.com/uploads/1/3/0/5/130547576/dapad_jusulekefoja_gewek_bowixolisatizir.pdf
    • http://kootenaycured.com/uploads/1/3/0/2/130272591/9713146.pdf
    • https://nenifuga.weebly.com/uploads/1/3/0/5/130550764/0f6bdcd7ce7.pdf
    • http://briannwebb.us/uploads/1/3/0/5/130588962/numogiwomikumun.pdf
    • https://golaxagadi.weebly.com/uploads/1/3/0/2/130272291/61b40ef195c.pdf
    • http://alliedmedstaffing.com/uploads/1/3/0/6/130621301/7b9c6.pdf
    • http://predatorhelmet.ru/uploads/2020/01/27/83e5e74a2b.pdf
    • http://mtdromedaryuc.org/uploads/1/3/0/6/130639143/37a1c1623.pdf
    • http://rafasejedo.magbaysportfishing.com/uploads/2020/01/28/nakiz_jegobiga.pdf
    • http://urfacefix.com/uploads/1/3/0/6/130604348/130604348.html#android+apps+2019

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000131c.bin
4282852a403498ce6d37a815737183e576a580d1cd8626a2c74ca755f74629c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131C 9056 bytes
font_01_sfnt_off0000754e.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754E 16268 bytes

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