Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8a70821a623ad3a…

MALICIOUS

PDF

41.9 KB Authoring application: QPDF
MD5: 52e9b419a5e21dcd3a57399b649ec5fc SHA-1: f8065e3bc3d5eda123fb41e2b777f6c7dd2a7426 SHA-256: a8a70821a623ad3a7158c4c5ce99bd8091409acfda97b67a4a4a757d592792cb
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 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 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification.

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://www.cheesecakeonastick.us/uploads/1/3/0/3/130313115/balis.pdf
    • http://rewindind.com/uploads/1/3/0/8/130814121/suzifedimal.pdf
    • http://www.crystalbarryphotography.com/uploads/1/3/0/7/130740461/4562269.pdf
    • http://simon-tse.com/uploads/1/3/0/7/130739105/redaruvi-guguturolu-magumofisar.pdf
    • http://musicstockphoto.com/uploads/1/3/0/4/130435982/8294473.pdf
    • http://austinwholesalehair.com/uploads/1/3/0/5/130588966/sinovape.pdf
    • http://neoho.net/uploads/1/3/0/5/130588195/ed3115f6.pdf
    • http://pitek.net/uploads/1/3/0/6/130621859/gosariverari.pdf
    • http://www.openarmsmarket.com/uploads/1/3/0/5/130588857/1257384.pdf
    • http://arcticplaytime.com/uploads/1/3/0/4/130493143/2207988.pdf
    • http://www.krazykarzunlimited.com/uploads/1/3/0/6/130620154/6754712.pdf
    • http://www.huntergathereronline.com/uploads/1/3/0/8/130874269/bigufogenofow.pdf
    • http://www.soulvillage.biz/uploads/1/3/0/3/130313500/lawojaxo-rofegovorupo-depeboj-watovezuravot.pdf
    • http://beinspiredworkshop.com/uploads/1/3/0/3/130313289/8636173.pdf
    • http://nationalrpoclinic.com/uploads/1/3/0/7/130776177/tebilebe.pdf
    • http://counselinginlafayette.com/uploads/1/3/0/4/130436473/tivigaxifax.pdf
    • http://pkflash.org/uploads/1/3/0/4/130477293/3162178.pdf
    • http://dcchosa.com/uploads/1/3/0/6/130621194/kalizekazene.pdf
    • http://ambtcex.com/uploads/1/3/0/9/130969313/130969313.html#hikvision+ip+camera+setup

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001a9d.bin
df66cec478b167eb1fedc220ea54030f7abc5980aade1e28271cd1cefe58fc4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9D 7764 bytes
font_01_sfnt_off0000601c.bin
1d1fa5121415f8f5353993473374918b9d2a38f433752094af4cce5d3be72c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x601C 16312 bytes

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