Malicious PDF — malware analysis report

Static analysis result for SHA-256 de22b27c1c9b8bba…

MALICIOUS

PDF

38.2 KB Authoring application: Poppler-utils First seen: 2020-09-24
MD5: ca030a31eab4900f29c26161dff477da SHA-1: a4e91e77ab79c60d06de7e8a0810fee24b4de52b SHA-256: de22b27c1c9b8bba4afe115729d639c30867cf394c8f45b09fbcab3aa9770e69
200 Risk Score

Malware Insights

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

The PDF contains a lure related to licensure examinations and exhibits a significant number of external links to other PDF files, indicating a link farm strategy. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The embedded URLs are likely part of a campaign to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jozscarlet.com/uploads/1/3/0/3/130324044/4382596.pdf In PDF document text
    • http://greenteapotcatering.co.uk/uploads/1/3/0/7/130776781/7821727.pdfIn PDF document text
    • http://www.buttermilkpink.com/uploads/1/3/0/6/130620325/suravulowuzofuwozu.pdfIn PDF document text
    • http://rebeccabevans.com/uploads/1/3/0/7/130775588/rujuvigebifak_rukefumakep_muzuz_bidufetizi.pdfIn PDF document text
    • http://professionalfacilitiesservices.com/uploads/1/3/0/9/130969686/tilisefoxi-veguzibobowogi-bebav-gosawajoladipi.pdfIn PDF document text
    • http://mail.kleiderstolz.de/uploads/1/3/0/6/130604321/numunusiri.pdfIn PDF document text
    • http://knightess.com/uploads/1/3/0/7/130776755/rawode.pdfIn PDF document text
    • http://www.circusla.com/uploads/1/3/0/6/130639785/4b400.pdfIn PDF document text
    • http://muziekkapel.be/uploads/1/3/0/5/130588651/luxagat.pdfIn PDF document text
    • http://bestkidsmentoring.org/uploads/1/3/0/7/130775441/6932e4.pdfIn PDF document text
    • http://currencyanalysis.com/uploads/1/3/0/2/130272432/13ba5.pdfIn PDF document text
    • http://gurudsdg.site/uploads/1/3/0/3/130323531/4040231.pdfIn PDF document text
    • http://fikrinisenyonet.com/uploads/1/3/0/6/130639263/tewidakif.pdfIn PDF document text
    • http://www.regardingcocktails.com/uploads/1/3/0/4/130476458/relapufepapuwixo.pdfIn PDF document text
    • http://housepixies.com/uploads/1/3/0/5/130551795/gubobofawamaparubo.pdfIn PDF document text
    • http://natalietremblay.ca/uploads/1/3/0/2/130289756/c92d8.pdfIn PDF document text
    • http://generalrecruitmentsolutions.com/uploads/1/3/0/8/130814226/pajir.pdfIn PDF document text
    • http://www.dangerlot.com/uploads/1/3/0/4/130483684/7585491.pdfIn PDF document text
    • http://unifiedbrewing.org/uploads/1/3/1/0/131070523/subaw.pdfIn PDF document text
    • http://arrowheadacupuncture.com/uploads/1/3/0/8/130814063/tagalul_lerixutubowidu_jenedugekuso.pdfIn PDF document text
    • http://mx.luxluminis.com/uploads/1/3/0/4/130476068/gorus_toxedom.pdfIn PDF document text
    • http://www.janchalifdesign.com/uploads/1/3/0/7/130775892/a4902b3a1c.pdfIn PDF document text
    • http://455.bpmtc.com/uploads/1/3/0/2/130274091/130274091.html#licensure+examination+for+agriculture+reviewer+free+downloadIn PDF document text

Related samples 3

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_off00003316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3316 8084 bytes
SHA-256: 307c356c178d2d57a8664030096b0307ec743649a545ffc7bf51a42ef941c44e

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