Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b9d81572c384fc6…

MALICIOUS

PDF

41.1 KB Authoring application: Serif PagePlus
MD5: a27cf3eace1d242d0d22c28272ad9d21 SHA-1: a43edfc0e3895fe1fb764bba876d65292c70fc53 SHA-256: 4b9d81572c384fc616bd4ecb7319c66da2651e0625934c311e509096360bbf6d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or SEO manipulation tactic, aiming to direct users to a multitude of other PDF documents hosted on various domains. The ClamAV detection and ML classifier further support its malicious nature, classifying it as Pdf.Phishing.TtraffRobotInstall.

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://www.miomondo.com.au/uploads/1/3/0/5/130551491/9347816.pdf
    • http://rick8.com/uploads/1/3/0/7/130776254/letixomadif.pdf
    • http://pocketbricks.com/uploads/1/3/0/2/130287936/5c5b24a0be2f21.pdf
    • http://misspeggysdogwalking.com/uploads/1/3/0/3/130379864/fewobopugodufu.pdf
    • http://wifeycosmetics.com/uploads/1/3/0/5/130551141/4522710.pdf
    • http://zonemaster.tbikesbekkevoort.be/uploads/1/3/0/8/130874671/rizubalegosudi.pdf
    • http://shoppingcentrebusiness.com/uploads/1/3/0/7/130739480/6183934.pdf
    • http://vacubomb.com/uploads/1/3/0/7/130776672/wozose.pdf
    • http://www.atlpeepingtom.com/uploads/1/3/0/7/130738752/c6538cf.pdf
    • http://nanasmemoriesfarm.com/uploads/1/3/0/2/130289235/c93c8034.pdf
    • http://fellowstech.us/uploads/1/3/0/4/130483806/balaxovusema_rexidilifapu_zabozaxusu_datolu.pdf
    • http://jaxnatives.com/uploads/1/3/0/7/130740443/6e87e242efb.pdf
    • http://keppingerlaw.com/uploads/1/3/0/5/130551684/7af7e.pdf
    • http://myurbanhermit.com/uploads/1/3/0/7/130775952/4af3743.pdf
    • http://nicoleedwardslimited.org/uploads/1/3/0/2/130272937/mobumegawe.pdf
    • http://cprsd2.com/uploads/1/3/0/7/130776553/4025043.pdf
    • http://spinstersguidetodating.com/uploads/1/3/0/6/130620632/nipumibud.pdf
    • http://dannyangelz.com/uploads/1/3/0/3/130313299/zumaf_lipemeso_lusoze_tegiwimunanefun.pdf
    • http://merakihealing.org/uploads/1/3/0/5/130590537/kosetunalira.pdf
    • http://www.berdoli.com/uploads/1/3/0/6/130639856/8e68a30.pdf
    • http://atrendyblogwithmeg.com/uploads/1/3/0/6/130604413/e30b9.pdf
    • http://alloexo.com/uploads/1/3/0/3/130312974/f0f429d80c73436.pdf
    • http://monteschoenstatt.org/uploads/1/3/0/7/130739669/2874850.pdf
    • http://host244.carmichaelnl.com/uploads/1/3/0/5/130543052/130543052.html#ielts+reading+test+28+september+2019
    • http://wifeycosmetics.com/u

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c4c.bin
10327b90fe70d172fb478eac939b19ac50d5f9b62ba762ada1206f1a306519fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C4C 8716 bytes

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