Malicious PDF — malware analysis report

Static analysis result for SHA-256 386c237227d449bd…

MALICIOUS

PDF

78.2 KB Created: 2020-10-29 00:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c0900c3ebb442d6e6b52b0e92fba3af4 SHA-1: 117ece4a18a04e8981146e6906538adc3057def7 SHA-256: 386c237227d449bd7f29a08303e555269aae4770ac10dcd23222d9ffcd6499bf
314 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.001 Malicious Link T1071.001 Web Protocols

The PDF contains multiple heuristics indicating malicious intent, including a critical finding for a redirector link to 'ggtraff.ru' and a brand impersonation lure for Norton. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it's the primary lure. The presence of a password archive lure and a security bypass instruction further supports a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 8

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/sejivepigogetu_fefab_dotarenezona.pdf.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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://ggtraff.ru/strik?keyword=guild+wars+2+error+code+42+login In PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/sejivepigogetu_fefab_dotarenezona.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/tarilidarila-kevamuvowezad-dugizamalenutaz-zujunoxuze.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/65bf7dd0f0f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mulerux/fexoge.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/ancient_words_that_give_power.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/bakers_cyst_nhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/wutakusalubag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/953539fe-b75b-4a79-a297-72efbcab6eeb/liferuduvekevatuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/7544/2088/files/22662190048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e52098e4-9e94-45fb-bc9d-bc878421ecb1/pekekobilutejaxupelit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1666/5272/files/37808849558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5344/8857/files/wixuwixeferoza.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/pathfinder_ranger_arcane_archer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a6d2d53-3cca-4937-9067-0950e251ea77/ziseromarukagez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4b5c27-872e-4057-85ba-781f3ac9f8e0/57597038431.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/greatest_common_factor_worksheet_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/wivowowexurajeto.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/wozavewufonam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50eb314c-0208-44f7-b90b-2d6232f6a83f/87726980808.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/business_plan_template_for_ngo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54212f19-4ac4-466e-97c0-726c6d5a45fb/zerilutexavipuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/89725409145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5144/6172/files/iesna_lighting_handbook_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e91c10b-f7c8-47d7-89f1-227639513d8c/64178338275.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE403 5252 bytes
SHA-256: ddada2e2965c3e40ac4025a2bcee24722cc56ff63479bb37ac231cee3c187504
font_01_sfnt_off0000f5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FF 10848 bytes
SHA-256: 5ca4f93bd2ce9b56eff853f9603d48028cd159f1ed8ea925bcc82cd2080e3f5d
font_02_sfnt_off00011b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B01 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361