Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8847c278926da24…

MALICIOUS

PDF

27.8 KB Authoring application: LibreOffice First seen: 2020-09-24
MD5: 1431552068ca7ae5012812c68ff619c1 SHA-1: fd6a136079ef8040995bf1352064897b12ebbb52 SHA-256: d8847c278926da245be88f88fb13a6ba6c1498ffde31d45804e867963776fa56
192 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique commonly used for SEO spam or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs likely serve as a distribution mechanism for further malicious payloads or phishing content.

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://bendavidsonministries.com/uploads/1/3/0/6/130620581/4686230.pdf In PDF document text
    • http://momochieikaiwa.jp/uploads/1/3/0/5/130551299/wewipunisit.pdfIn PDF document text
    • http://shardexplorers.com/uploads/1/3/0/5/130590671/3835712.pdfIn PDF document text
    • http://doodlebugblessingsgoldendoodles.com/uploads/1/3/0/5/130540405/dadot.pdfIn PDF document text
    • http://kosefuwu.infospina.ru/uploads/2020/01/27/7ec76e3.pdfIn PDF document text
    • http://familylifecommunity.org/uploads/1/3/0/5/130551463/6718953.pdfIn PDF document text
    • http://nerdsville.org/uploads/1/3/0/4/130476910/19efc882a798b1.pdfIn PDF document text
    • http://drugoyvzglyad.com/uploads/2020/01/27/362492.pdfIn PDF document text
    • http://baarleproeft.com/uploads/1/3/0/6/130639503/9499868.pdfIn PDF document text
    • http://zowulelife.sportoptika.ru/uploads/2020/01/27/refomipodowuguz.pdfIn PDF document text
    • http://branchlutheranschoolshaiti.net/uploads/1/3/0/4/130489914/7c651d.pdfIn PDF document text
    • http://sapawef.qiwi-luck.pw/uploads/2020/01/28/1417208.pdfIn PDF document text
    • http://yournaturallybrightpatiocovers.com/uploads/1/3/0/5/130588427/0c05500f6e118b.pdfIn PDF document text
    • http://kinesiologie74.fr/uploads/1/3/0/2/130272512/vuzoz.pdfIn PDF document text
    • http://misssupremepurityqueen.com/uploads/1/3/0/5/130551266/130551266.html#angularjs+directive+template+bindingIn PDF document text

Related samples 7

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_off000012b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B3 6072 bytes
SHA-256: ac281f9685914532991fac15cbbe3f94cb187508b976740cba2992edbdf68681

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