Malicious PDF — malware analysis report

Static analysis result for SHA-256 e13c62bbfea33af2…

MALICIOUS

PDF

39.2 KB Authoring application: PDFedit
MD5: 992b662c5804aa0769c68ce30a40618c SHA-1: 563bdc7f517655c03e9bf579421ececcbef477d3 SHA-256: e13c62bbfea33af230aa8afe9d7ba6ca4bc51741caf5a7f1dd730abc686523b5
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malware. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a critical heuristic identified it as a PDF link farm. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to a multitude of external PDF resources.

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://andrealynnunger.com/uploads/1/3/0/6/130620990/rudenoxo_lujixigawini.pdf
    • https://jevadetalon.weebly.com/uploads/1/3/0/6/130604077/datusukixufusa_bamaxisaxer_volabotezubi_dizavuxu.pdf
    • http://janiw.ashurov.com/uploads/2020/01/28/desasafalawodadimo.pdf
    • http://lakecountyrecovers.com/uploads/1/3/0/4/130483200/8588707.pdf
    • https://jafomali.weebly.com/uploads/1/3/0/3/130323674/tagabuxukup.pdf
    • http://buzuj.jasonbarun.com/uploads/2020/01/28/7566193.pdf
    • http://allisonautrey.com/uploads/1/3/0/5/130551144/89dd2f3c8be162.pdf
    • http://bearcreekaquatics.com/uploads/1/3/0/2/130273761/dagipukawud_lexakopanow.pdf
    • http://campingdishwasher.com/uploads/1/3/0/2/130274319/ba4d8cdd4.pdf
    • http://juliejesternewman.com/uploads/1/3/0/2/130273962/mesan.pdf
    • https://finizefakana.weebly.com/uploads/1/3/0/5/130588685/tinasol_naroxefeba_lizofemisiz.pdf
    • http://11pluscolchester.com/uploads/1/3/0/6/130639369/2434710.pdf
    • http://xunuge.znamenitost.online/uploads/2020/01/28/1870155.pdf
    • http://cmc-tam.weebly.com/uploads/1/3/0/6/130620263/vakujetozukufozufug.pdf
    • http://advantageprotocol.com/uploads/1/3/0/4/130489097/90a608d3f8.pdf
    • http://agingnaked.com/uploads/1/3/0/5/130540501/d9e72f08ae3ef.pdf
    • http://riveroflifeworship.com/uploads/1/3/0/6/130620626/timas-sabetevam-dirufomuzibobe-zomugiwujo.pdf
    • http://qpeqwqj.info/uploads/2020/01/28/sufupuvavipikujeta.pdf
    • http://vivagot.repuljvelunk.website/uploads/2020/01/28/6204d3.pdf
    • http://westech-rides.com/uploads/1/3/0/6/130639362/muwig_maveta_mowoke.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/5/130590051/130590051.html#myob+accountedge+pro+v15
    • http://riveroflifeworship.com/uploads/1/3/0/6/130620626/timas-sabete

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000164a.bin
ad8b7d34eb7527bce2244d0e84c0cd3ec325f588dc12d216ed0b6aaf344bb8e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x164A 8212 bytes

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