Malicious PDF — malware analysis report

Static analysis result for SHA-256 789b3f1f2b8a14c0…

MALICIOUS

PDF

58.3 KB Created: 2020-11-09 11:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 6200788bd61942a0c0a1edf2dde07727 SHA-1: ec48ecb459d8308ccb4dc8f6e0b7cc87472032b5 SHA-256: 789b3f1f2b8a14c098e8a46c922a5ac21b4e75dfb2f9807026a2c2c52d564932
134 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?keyword=farmall+super+a+manuals+free+downloads'. Additionally, a high-severity heuristic indicates the document instructs the user to disable security software, a common tactic to bypass defenses. While no scripts were extracted, the presence of a malicious URL and the security bypass instruction strongly suggest an attempt to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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
  • 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://gettraff.ru/aws?keyword=farmall+super+a+manuals+free+downloads In PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/nimovafoladux.pdfIn PDF document text
    • https://neboligi.weebly.com/uploads/1/3/4/5/134528371/lopobijopelunoparem.pdfIn PDF document text
    • https://tokuniti.weebly.com/uploads/1/3/4/3/134331772/886f4.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/f58cb22d-71ef-43d8-a8b5-1c4c42de4c67/corona_target_market.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/aol_app_for_windows_10_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b552d5bb-6875-46b6-b6eb-ecf40c1e537d/luxatuzixazenefazikozewag.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/jizowidagilolemexaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/catalogo_boticario_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78ea1789-f14e-465c-bcf4-1a962a843ecb/whirlpool_oven_self_clean_f5e2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71763e2c-3591-442a-b7f6-0a83cf030018/62078573338.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/jofebabadeneketoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59ba2de4-75dd-41eb-baf4-5247f2e6cb81/31944111624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/657f808c-052f-46f1-9913-006f4cc25e8f/59256092601.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/bank_exam_study_material_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5E 5232 bytes
SHA-256: 676f797b01366b1e9c8a1e961b09f97ecb9b32eecc6fa75044ba699a606c70c6
font_01_sfnt_off0000912b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912B 17036 bytes
SHA-256: 56f395bc6ef97e3a3e98e7db268469f3f903cdcc03d4eb483c808e0b03089327
font_02_sfnt_off0000c647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC647 16164 bytes
SHA-256: 53ed2ddc435f132c14dc46ee4b35889c64477a7d9c319f39d4cd66ffd5c4ed0d

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