Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f74c5fb3a2b2ed9…

MALICIOUS

PDF

51.7 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: b9689fbb8d54a8e68f823beb3c6e40f7 SHA-1: e75e4ce0288c0167956a3a1107087adcf4affa01 SHA-256: 9f74c5fb3a2b2ed9e3b250333fc19bd318aa8cafd03f09502de3a0765c2ecc9d
192 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, which is a common technique for phishing and malware distribution. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://adsl-65-43-203-129.mbossinc.com/uploads/1/3/0/7/130776804/gunadis_kuvobis_valugoxidesex_bujev.pdf In PDF document text
    • http://riotthink.com/uploads/1/3/0/7/130740298/wepitus_ruwuz_befela_kezigemerezurix.pdfIn PDF document text
    • http://pozoper.pl/uploads/1/3/0/7/130776118/679135.pdfIn PDF document text
    • http://novific.com/uploads/1/3/0/6/130621798/2ce041c5.pdfIn PDF document text
    • http://healthyprinting.biz/uploads/1/3/0/8/130813314/bokuka-degexeb-sinibejasitawux.pdfIn PDF document text
    • http://comedyzoneproject.com/uploads/1/3/0/6/130605368/nesokexi.pdfIn PDF document text
    • http://mkemotorsports.net/uploads/1/3/0/5/130544321/0a4d194d219346.pdfIn PDF document text
    • http://www.spacetimewithstuartgary.com/uploads/1/3/0/5/130550830/1758645.pdfIn PDF document text
    • http://viperfisharts.com/uploads/1/3/0/7/130776103/fd0e514472139.pdfIn PDF document text
    • http://santurbanvisible.org/uploads/1/3/0/2/130289179/74efb7138.pdfIn PDF document text
    • http://nullaginecrc.net/uploads/1/3/0/4/130483656/1031078.pdfIn PDF document text
    • http://drandrewlukaris.com/uploads/1/3/0/6/130620868/e51ccc5a3a.pdfIn PDF document text
    • http://cognitiverehabilitation.org/uploads/1/3/0/6/130604799/wevawipozuwo.pdfIn PDF document text
    • http://jukesbar.net/uploads/1/3/0/6/130639333/4268343.pdfIn PDF document text
    • http://milegion-legacyrun.org/uploads/1/3/0/8/130815031/4699290.pdfIn PDF document text
    • http://chatlabs.ai/uploads/1/3/0/7/130775760/1502630.pdfIn PDF document text
    • http://www.equine-everything.com/uploads/1/3/0/6/130605344/3fb09023803.pdfIn PDF document text
    • http://sunges.net/uploads/1/3/0/7/130739490/mekumelifodogom.pdfIn PDF document text
    • http://leadsment.com/uploads/1/3/0/5/130550995/548504.pdfIn PDF document text
    • http://instantcontainer.com/uploads/1/3/0/4/130489706/tosiviv.pdfIn PDF document text
    • http://www.themomma.org/uploads/1/3/0/5/130551073/fuguk.pdfIn PDF document text
    • http://magicaladventurestravelbystacy.com/uploads/1/3/0/4/130478110/2423325.pdfIn PDF document text
    • http://r4yex1.bdgct.com/uploads/1/3/0/7/130776069/130776069.html#gromacs+manual+4.6.5In PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000105f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F 8316 bytes
SHA-256: 7051e8e0ddcfc28fcd609a4a1a3854f61f4fbfacafd800d4cc786e9278c10453

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