Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0c68cf99c80f0d…

MALICIOUS

PDF

35.1 KB Authoring application: LibreOffice First seen: 2020-09-07
MD5: b585a4fbfe411f5b9838804c63eea140 SHA-1: 385cfac054afe3554e1c5284b173e9c7fc0f5124 SHA-256: dc0c68cf99c80f0dab4e49d2e233565526dcf8e823d4522f83e4f42ad9bcc3a9
192 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with the primary heuristic identifying it as a PDF SEO link farm. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically classifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs, particularly the first one pointing to 'csgocave.net', are likely part of the phishing or malicious redirection chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://csgocave.net/uploads/1/3/0/3/130324326/fikem.pdf In PDF document text
    • https://narojeli.weebly.com/uploads/1/3/0/6/130603945/9067482.pdfIn PDF document text
    • http://zamube.ww7ww.top/uploads/2020/01/27/9645282e86ff.pdfIn PDF document text
    • http://nologes.macronbit.com/uploads/2020/01/28/8177894.pdfIn PDF document text
    • http://millermediafilms.com/uploads/1/3/0/3/130379289/vilufejuxigi_tovebasusurej_pirowevuvamu_buxewesu.pdfIn PDF document text
    • http://mpowerbuilding.ca/uploads/1/3/0/4/130476447/lasipufugovuw-xadaxamevow-zavelobavud.pdfIn PDF document text
    • http://kibagaloda.vezirgroup.com/uploads/2020/01/28/wamefetiruvawulu.pdfIn PDF document text
    • http://annpiquette.com/uploads/1/3/0/6/130605502/sotimesowore.pdfIn PDF document text
    • http://zakarolu.betasproject.online/uploads/2020/01/27/ritudavofupovuz.pdfIn PDF document text
    • http://sacredhearts.ca/uploads/1/3/0/6/130620150/zebuxan-rojegok.pdfIn PDF document text
    • http://sftutoring.org/uploads/1/3/0/5/130550682/9032393.pdfIn PDF document text
    • https://nolupunitis.weebly.com/uploads/1/3/0/5/130550859/85334f9ac4.pdfIn PDF document text
    • http://nstuk.com/uploads/1/3/0/4/130476346/kafori.pdfIn PDF document text
    • http://wamukob.kcegamma.ru/uploads/2020/01/27/3250562.pdfIn PDF document text
    • https://zosedadomator.weebly.com/uploads/1/3/0/2/130271035/36cbaf4f33486.pdfIn PDF document text
    • http://securitycitizen.com/uploads/1/3/0/5/130588202/lobepup.pdfIn PDF document text
    • https://zogorojadodu.weebly.com/uploads/1/3/0/2/130287953/neweja.pdfIn PDF document text
    • https://dajuxamadodal.weebly.com/uploads/1/3/0/6/130605387/cb601ef43ab.pdfIn PDF document text
    • http://annarbormothertree.com/uploads/1/3/0/5/130590279/6cb3522508721c.pdfIn PDF document text
    • http://alphaomegainvestmentsllc.com/uploads/1/3/0/6/130621060/194669.pdfIn PDF document text
    • https://bubevuwuxena.weebly.com/uploads/1/3/0/5/130590770/zozap.pdfIn PDF document text
    • http://ohioawnings.com/uploads/1/3/0/6/130605433/72a1eab8f13.pdfIn PDF document text
    • http://middletonandnewbigginparishcouncil.org/uploads/1/3/0/6/130604740/mejafavatuz.pdfIn PDF document text
    • http://sharedtravel.voyagerwebsites.com/uploads/1/3/0/2/130270932/130270932.html#sap+abap+function+reuse_alv_grid_displayIn PDF document text
🗂 Part of campaign: alphaomegainvestmentsllc.com 3 samples

Related samples 8

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_off000016d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D6 7956 bytes
SHA-256: c20540f84b8656af37c858c0421b7f45f8a26d90809080ee3d869822f5fdb425

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