Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf96dde41fe656d…

MALICIOUS

PDF

36.9 KB Authoring application: Mobipocket Creator First seen: 2020-09-24
MD5: 4d78c018aab76dc0550bc064d52d4201 SHA-1: bd5fd3017935cdc5a6aac1fe3904951433600bf5 SHA-256: 8cf96dde41fe656d008d4c3887b4de05baaed4d6c104b02f553d640a6baa7dc4
192 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags this as a phishing-related PDF. The embedded URLs are likely used to direct users to malicious content or to manipulate search engine rankings. No scripts were extracted from this sample.

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://stmonicahealthcare.com/uploads/1/3/0/4/130488786/foxafunuwizo.pdf In PDF document text
    • http://adrianbyrdcounseling.com/uploads/1/3/0/6/130603941/8775791.pdfIn PDF document text
    • http://peerlesselegance.shop/uploads/1/3/0/5/130543092/sofujelexex-fofew.pdfIn PDF document text
    • http://humblehandstulsa.com/uploads/1/3/0/7/130739826/fcf62e09f0028.pdfIn PDF document text
    • http://testuda.com/uploads/1/3/0/8/130813652/funuborovip.pdfIn PDF document text
    • http://mynkylc.com/uploads/1/3/0/7/130776639/mixotuvinovenufuxoro.pdfIn PDF document text
    • http://dvisions.org/uploads/1/3/0/7/130740207/jaxawevasosikor_korixagajaful_vujenox_xasirereva.pdfIn PDF document text
    • http://fantasyalmanac.com/uploads/1/3/0/3/130313541/nurugovegurowuse.pdfIn PDF document text
    • http://hcapittsburgh.com/uploads/1/3/0/7/130775565/norazumobopa.pdfIn PDF document text
    • http://technicalserviceprovidersnetwork.com/uploads/1/3/0/3/130313426/5b4289614d875.pdfIn PDF document text
    • http://premiumadultdiapers.com/uploads/1/3/0/5/130550706/zadakenuvexo_zulukokizel_lurifabeduji_tufapiv.pdfIn PDF document text
    • http://science.rigbytrojans.org/uploads/1/3/0/6/130639517/kolixumowis_veganamigonif_wisexo.pdfIn PDF document text
    • http://randomlyincoherent.com/uploads/1/3/0/6/130639409/doliwabago.pdfIn PDF document text
    • http://arrowmovie.com/uploads/1/3/0/5/130588675/nawativi.pdfIn PDF document text
    • http://innovativesuccessmagazine.com/uploads/1/3/0/5/130550985/guvuku.pdfIn PDF document text
    • http://kalearamsey.net/uploads/1/3/0/6/130604896/e9f335f76092b.pdfIn PDF document text
    • http://townofclermont.com/uploads/1/3/0/7/130739117/ropajogemanadi.pdfIn PDF document text
    • http://mcguttersunlimited.com/uploads/1/3/0/5/130550951/4660754.pdfIn PDF document text
    • http://www.kelmarproperties.com/uploads/1/3/0/4/130435985/8026948.pdfIn PDF document text
    • http://metoohouston.com/uploads/1/3/0/6/130603747/dixabepewilajegediv.pdfIn PDF document text
    • http://webmail.roryward.com/uploads/1/3/0/8/130814120/130814120.html#haunted+castle+on+hallows+eve+plot+summaryIn 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_off00003097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3097 7784 bytes
SHA-256: 1acc0985d070d95382a8d18ae67a9e7bd945956de91abcb88452c40313d430be

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