Malicious PDF — malware analysis report

Static analysis result for SHA-256 06567a670e0de59a…

MALICIOUS

PDF

76.0 KB Created: 2021-04-17 17:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7a06dcea80ae35c73e6894f8aaf4d539 SHA-1: 2f2e836bbda8add9dcd3e0c287dacb80bc24673f SHA-256: 06567a670e0de59a9cde09b0357242055e28aae2e7163f6a5a8adfeca0eff459
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains multiple embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. The heuristic 'SE_CALLBACK_LURE' suggests a callback phishing or tech-support scam pattern, aiming to trick users into calling a number or visiting a malicious link. The presence of numerous disposable domains and link farms further indicates malicious intent, likely to distribute further payloads or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://pelibifir.ru/strik?utm_term=how+to+set+time+and+date+on+dsc+keypad PDF link annotation
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/6869bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447641/normal_6052f196af5e1.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/bruce_lee_s_fighting_method.pdfIn PDF document text
    • http://mevakimuvu.mypressonline.com/39321795807.pdfIn PDF document text
    • https://liropesab.weebly.com/uploads/1/3/1/4/131454219/guxoreb.pdfIn PDF document text
    • https://guratebiliwabop.weebly.com/uploads/1/3/2/6/132682790/6596505.pdfIn PDF document text
    • http://gufutaca5.xyz/microlife_blood_pressure_monitor_manual6e5ge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417662/normal_6066aeb30dc81.pdfIn PDF document text
    • http://stalekost.site/jirexuzotuxiret2h69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420592/normal_60277a8765097.pdfIn PDF document text
    • https://fifekususelamib.weebly.com/uploads/1/3/5/3/135349053/nofujatexinegudil.pdfIn PDF document text
    • http://tehnopolis.org/yes_please_in_spanish_slang23c26.pdfIn PDF document text
    • http://vivadoctor.ru/vishnu_sahasranamam_tamilkvufd.pdfIn PDF document text
    • https://zesadokalefon.weebly.com/uploads/1/3/2/6/132681767/barojoraliwu.pdfIn PDF document text
    • https://kijenelix.weebly.com/uploads/1/3/4/6/134612576/tigoxasaguxivotanaxe.pdfIn PDF document text
    • http://sluzhba1.net/417806429971oml8.pdfIn PDF document text
    • https://posanawefu.weebly.com/uploads/1/3/4/7/134711745/0492011b7f6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450044/normal_602d397b9f5c3.pdfIn PDF document text
    • http://andyhong.blog/riladanadaeectn.pdfIn PDF document text
    • https://wuvobarapupi.weebly.com/uploads/1/3/0/8/130813490/sitekuzevonevu-bodebewavu-bugonomeji.pdfIn PDF document text
    • http://rollernefrit.xyz/binakanaledokexulomejzepz3.pdfIn PDF document text
    • https://voberugupov.weebly.com/uploads/1/3/4/4/134496708/4829017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE830 5308 bytes
SHA-256: 226da0ae0174c9cc4ffb6b13359f654a2967ea29d9855bb1e7244d961a0a4b20
font_01_sfnt_off0000fa4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4B 11824 bytes
SHA-256: cd7c4ddf5af24d21eca87459f80c35a37fbf5f6218ba0ddb0eee02a1324b7cfb