Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74c40ff3cba56b4…

MALICIOUS

PDF

40.2 KB Authoring application: pstoedit
MD5: 195fee1f4783c0090c850095ebe9c6bb SHA-1: d97c6f2cf960cde8dc923e222cb1dddcd4bf417c SHA-256: e74c40ff3cba56b486e8abf212e8d205e9d50efcc19cb753627823c4cf96ff72
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing campaign designed to distribute malicious content or manipulate search engine results. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

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://sport-club-f.weebly.com/uploads/1/3/0/2/130272981/c8402301945a1.pdf
    • http://michellejestersite.com/uploads/1/3/0/5/130546971/5562287.pdf
    • http://cccvancouver.com/uploads/1/3/0/2/130270745/moxewuzezod-pixubadanumor.pdf
    • http://cloud9weddingflowers.com/uploads/1/3/0/6/130604300/7772804.pdf
    • http://kukude.herheddoha.pro/uploads/2020/01/28/2631310.pdf
    • http://fotidisut.salonhm.net/uploads/2020/01/28/e9d2913c87837b.pdf
    • http://3destate.ru/uploads/2020/01/27/funamonuveziwin.pdf
    • http://pesurezaf.vipiski-besplatno30.icu/uploads/2020/01/29/3710785.pdf
    • http://zin.agronomexpert.ru/uploads/2020/01/28/4ea20998ffa7c.pdf
    • http://gob.onlinespace.tech/uploads/2020/01/27/4bc923.pdf
    • https://subidajuguxax.weebly.com/uploads/1/3/0/5/130589180/ad38d.pdf
    • http://mnemolyse.com/uploads/1/3/0/5/130551143/7970198.pdf
    • http://skipcoryell.com/uploads/1/3/0/2/130289573/9475275.pdf
    • http://abettertravelagency.com/uploads/1/3/0/6/130620417/vutawizoxaduminaze.pdf
    • http://rachelhjohnston.com/uploads/1/3/0/5/130551941/412052.pdf
    • http://bainessphsdrama.com/uploads/1/3/0/2/130289681/bugegakububu.pdf
    • https://newapotunok.weebly.com/uploads/1/3/0/2/130289436/vigodem.pdf
    • http://benkregel.com/uploads/1/3/0/6/130639479/130639479.html#drager+narkomed+gs+anesthesia+machine+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000147e.bin
85eebf15c39f1fc7bda956d4657fe8a844a61edea3ec91e03b5ff9c2fd29836a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147E 7932 bytes

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