Malicious PDF — malware analysis report

Static analysis result for SHA-256 45947725fc62cc2d…

MALICIOUS

PDF

50.5 KB Authoring application: Pdftk
MD5: a2f98d01f1330feceb089e253c56e3b8 SHA-1: 31b5eee00642f56304b6d30e8e06f8b196779984 SHA-256: 45947725fc62cc2d73b63dced3748bfaaa6b4712550cfd14215ba8828bfd386e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The primary attack pattern involves directing users to a network of external PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mpunlimited.com/uploads/1/3/0/5/130546385/wogufepumadujudo.pdf
    • http://waggawaggaprobus.waggamatters.com/uploads/1/3/0/5/130538956/1377221.pdf
    • http://curiousbeans.com/uploads/1/3/0/5/130590229/1468220.pdf
    • http://stonestockfibers.weebly.com/uploads/1/3/0/5/130551249/vudekubemo-viminenaj-xozuv-rebiva.pdf
    • http://moderncountrydoctor.ca/uploads/1/3/0/5/130588532/191d35b1628.pdf
    • http://sonnyandashwed.com/uploads/1/3/0/2/130288720/543145.pdf
    • http://pensacolaaudiodocumentation.com/uploads/1/3/0/2/130289226/gevamenaxip.pdf
    • http://nataliereneesteffen.org/uploads/1/3/0/6/130639827/zijuxuxunaxog_pewolas_jijukigikirevis.pdf
    • http://kiwefofuge.7gnomov.biz/uploads/2020/01/27/kefoxuretowuf-folebewej-varuwupadora-wudorowokul.pdf
    • http://sally-girl.pw/uploads/2020/01/28/408ca2c93.pdf
    • http://decorativeconcreteminneapolis.com/uploads/1/3/0/6/130604583/sujibewakotutanotino.pdf
    • http://rwpdivephotography.com/uploads/1/3/0/6/130604650/gukewoxanoz_nibalap_defetomiso_kajafuku.pdf
    • http://jof.vipdating.icu/uploads/2020/01/28/e3fb7580ed.pdf
    • http://jlu-boston.org/uploads/1/3/0/6/130620807/woxokutilid.pdf
    • https://nizikivinagunel.weebly.com/uploads/1/3/0/3/130379291/xaxivitagew_rumamewesopa_xeleg_wukitoguwo.pdf
    • http://soz.suddenweblink.online/uploads/2020/01/27/339042d085586.pdf
    • http://graphixline.com/uploads/1/3/0/4/130490245/8401899.pdf
    • http://bigbrightearth.com/uploads/1/3/0/2/130270785/e8eb8f.pdf
    • http://redmangroupe.com/uploads/2020/01/28/5451787.pdf
    • http://bellaspeechsensoryworldinc.com/uploads/1/3/0/6/130604488/jixizutore.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/6/130639622/130639622.html#alan+walker+dj
    • http://bellaspeechsensoryworldinc.com/uploads/1/3/0/6/130604488/jixizutore.pd

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000173e.bin
97809beb01b7319f7bce3c966b965387754482f9b9648719a0e8616ec2569e4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x173E 10836 bytes
font_01_sfnt_off00006e19.bin
f89c0e0946aa0d1e48aa5356a2d31bc24f5b96ca1f2cb84330b25817f6444d93
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E19 2024 bytes
font_02_sfnt_off00007800.bin
55bdf772bebe664637372705ce10cb54dd71c03bd75d6caa17bb058af07ef821
pdf-font-stream PDF embedded font (sfnt) at offset 0x7800 20304 bytes