Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7b9024dea27507…

MALICIOUS

PDF

40.1 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: 0a096e2f784e5d170cabd7dc521d8221 SHA-1: bd467e93143fbfd50602d7ed236200c24e8d7b50 SHA-256: 3e7b9024dea2750704217e84c1552590e44d3e90460a01fa430ae1fe4eb34b36
192 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, forming a link farm, which is a common tactic for phishing and malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, while containing text about joinery, also embeds numerous links to external PDF files, suggesting a lure to download further malicious 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://gos.tatarstan.travel/uploads/2020/01/28/sutesimade_regulegogosawij_zetovokukumexox_bodux.pdf In PDF document text
    • http://tavabap.yootrade.ru/uploads/2020/01/28/maparej.pdfIn PDF document text
    • http://bradwarnermedia.com/uploads/1/3/0/5/130540493/eacb7e.pdfIn PDF document text
    • http://ultracooltrends.com/uploads/1/3/0/3/130323632/dulusevujope_tegijakezojuz_jafopikute_zuman.pdfIn PDF document text
    • http://nickysawesomewebsite.com/uploads/1/3/0/4/130476340/1f7fc69d0abc.pdfIn PDF document text
    • http://moscowshamrocks.com/uploads/1/3/0/4/130476091/tugominuxolujorukoja.pdfIn PDF document text
    • http://uclaprisoned.org/uploads/1/3/0/6/130620818/nakixojav.pdfIn PDF document text
    • http://biking4life.org/uploads/1/3/0/5/130542770/furaxusedulutifiku.pdfIn PDF document text
    • http://nicosnerdnews.de/uploads/1/3/0/4/130483741/28233078061c1.pdfIn PDF document text
    • http://xoveto.gg-jewelry.ru/uploads/2020/01/27/tuvuronilobaje-nujuse.pdfIn PDF document text
    • http://cavinfitness.com/uploads/1/3/0/3/130323281/ab000d77d.pdfIn PDF document text
    • http://connectivityusa.net/uploads/1/3/0/6/130639463/dituxijexuxijuvapilo.pdfIn PDF document text
    • http://mojiles.net/uploads/1/3/0/2/130287504/povurokubibepi.pdfIn PDF document text
    • http://playhardathletics.com/uploads/1/3/0/5/130588839/532e8ea286557.pdfIn PDF document text
    • http://birdhousepdx.com/uploads/1/3/0/4/130483993/8451160.pdfIn PDF document text
    • http://jioulian.com/uploads/1/3/0/5/130543671/xevaxeto.pdfIn PDF document text
    • http://mysamcooke.com/uploads/1/3/0/5/130551427/bulanowigakibex.pdfIn PDF document text
    • http://vawase.graf-von-eichendorff.online/uploads/2020/01/29/1091969.pdfIn PDF document text
    • http://wal.extrade.website/uploads/2020/01/29/4a464.pdfIn PDF document text
    • http://sustainablesuburbancommunities.com/uploads/1/3/0/5/130588796/3120395.pdfIn PDF document text
    • http://northwestuu.com/uploads/1/3/0/4/130488442/130488442.html#the+art+of+joineryIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000162f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162F 8392 bytes
SHA-256: 1d68db33e6c6054ffbe70c1cf1725afdc5e045f3a331e182c7b040db85c87e37