Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0e818f88066521…

MALICIOUS

PDF

91.9 KB Created: 2021-05-31 14:28:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 5beb8f290faecc119da33abc5c59339b SHA-1: 20dfeb4df4d85d562815b0928bdc17e2a874aab1 SHA-256: 5d0e818f880665218e871824348f8c66cb18111243a6661789e81fc073181a7b
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to a search query, further supporting a phishing or scam pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 8

  • 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 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://fokemale.ru/strik?utm_term=what+is+the+onetouch+verio+control+solution+used+for PDF link annotation
    • https://lenukomezol.weebly.com/uploads/1/3/4/3/134311572/7509419.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370068/normal_5fcb6358b0b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_601bc77da8b62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382197/normal_5fe371bb308ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414679/normal_60209d93ed293.pdfIn PDF document text
    • https://tidijutaxidekoz.weebly.com/uploads/1/3/4/5/134589823/3301165.pdfIn PDF document text
    • https://tanaxafim.weebly.com/uploads/1/3/4/5/134501517/9293565.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470016/normal_6052bc5e97b70.pdfIn PDF document text
    • https://suwanozafedo.weebly.com/uploads/1/3/4/5/134587456/c1842924e478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445573/normal_6021cc1fd60fe.pdfIn PDF document text
    • https://didizotaxudip.weebly.com/uploads/1/3/4/6/134619455/8223455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_605d8299da938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389085/normal_5fe5c4f766d8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497093/normal_6029a9a3b0c12.pdfIn PDF document text
    • https://zeruwowigewal.weebly.com/uploads/1/3/0/8/130813736/jasodemisogapoj.pdfIn PDF document text
    • https://vokavubibobudew.weebly.com/uploads/1/3/5/3/135316357/komijaxupavavuva.pdfIn PDF document text
    • https://vawanateriti.weebly.com/uploads/1/3/0/9/130969814/wolepegexit-falivofizovi-toxuwasovevexad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408001/normal_60339a9114b3e.pdfIn PDF document text
    • https://vumamoxaku.weebly.com/uploads/1/3/1/3/131380777/1038291.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bf703b2-ad6c-4bdb-a30b-806dc6cdaf0e/how_to_fix_samsung_tv_no_sound.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba3b1003-aa71-43c1-9ea6-0160e363ff05/vupopiwezefoxuloko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/968f7752-a9f3-4f29-bdbb-51f4d8b7a5cb/bikini_bottom_genetics_worksheet_2_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203989b7-9f1f-4d37-bbfa-605738ba0bb7/pegopavolagoribubagubiv.pdfIn 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_off00012522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12522 5180 bytes
SHA-256: 41fcb0184d52c1e50e2ac3817551d3237fdc14f94d0a70c7b4084396c2188966
font_01_sfnt_off000136cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136CD 12268 bytes
SHA-256: 6740271eea4c4dda2d360835eab0a751ea28a41b905ca409d9aeeba0bf75a0fd