Malicious PDF — malware analysis report

Static analysis result for SHA-256 16fc64d037586fcb…

MALICIOUS

PDF

64.0 KB Created: 2021-05-11 23:22:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: bebf1d78f3f8f6bca6b8bfb595cda0c5 SHA-1: 72230c38dc2335e44c5ead29ffb9a4c86be39502 SHA-256: 16fc64d037586fcb8bf807b049893c5b03a19e8c375e0305245f1f553c5c6cc5
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'benefits of barley', which is likely a pretext to mask the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8028

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://vilenefex.ru/strik?utm_term=que+beneficios+tiene+la+cebada PDF link annotation
    • https://cdn.sqhk.co/zimopiroxab/oWeccPk/pdf_to_audio_converter.pdfIn PDF document text
    • http://salopkisa.website/how_to_draw_cartoon_dog_horroruuzbx.pdfIn PDF document text
    • http://shop-profildoors.ru/sazokosirerop7pmgt.pdfIn PDF document text
    • http://smartycredit.info/617268690584qtr7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_605c6233b3439.pdfIn PDF document text
    • https://datedevob.weebly.com/uploads/1/3/1/3/131381982/4971925.pdfIn PDF document text
    • http://vujivozopix.iblogger.org/sidusimavitasen.pdfIn PDF document text
    • http://zadumagasuzek.22web.org/kpss_vatandalk_ders_notlar_benim_hocam.pdfIn PDF document text
    • https://cdn.sqhk.co/xaderipamuva/op5gdib/weveme.pdfIn PDF document text
    • https://wivikomale.weebly.com/uploads/1/3/2/7/132740486/df416134db22a5.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/7fea7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456667/normal_602f5b023db47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466172/normal_6016ae0d78226.pdfIn PDF document text
    • https://cdn.sqhk.co/juduxijumijo/PJgjif5/break_down_that_wall_ronald_reagan.pdfIn PDF document text
    • http://xasefosixojoloj.iblogger.org/geek_charming_book.pdfIn PDF document text
    • https://zefisuket.weebly.com/uploads/1/3/4/8/134868467/541fa6664b6bf1b.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/Kkhjjac/balls_bounce_2_mod_apk.pdfIn PDF document text
    • https://wipemaxo.weebly.com/uploads/1/3/5/3/135345075/rawitarokelevebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://resifukizuve.rf.gd/sony_a330_lenses.pdfIn PDF document text
    • http://sibexim.epizy.com/keseluluwi.pdfIn PDF document text
    • http://pixokux.rf.gd/etica_para_amador_resumen_cap_5.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12B 5120 bytes
SHA-256: ad2ec03dc1e3bd9bb3111f02ab3a2b1d5a5fc207642858c5b4eba1d6b3ebe96e