Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aebf1671646f007…

MALICIOUS

PDF

50.4 KB Created: 2020-11-03 18:01:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ee028ef1fed59cc6a1002edc28a3935b SHA-1: dd06bd9a3ce8c5e82ad1dfd859fc3ad8887b8f3f SHA-256: 7aebf1671646f007f07228ef44adaaecff5c08b40a4bdb439f23f85867291e69
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same URL and a title suggesting a lure for game cheats. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=wheel+of+fortune+cheats+answers+occupation In PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/xutunobulafimorebuj.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/naxikezomafizaw.pdfIn PDF document text
    • https://vavagufone.weebly.com/uploads/1/3/4/3/134345741/8d30b373dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dojonuta/how_great_is_our_god_chords_d.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/possessive_adjectives_in_french_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa9747d8-95fb-49c6-9fae-99023ee009d7/wufatabibur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a87b062b-7b51-4f78-bec2-5c440d0bc984/89728224501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bd63530-c184-45ec-986a-d8c272832218/xelofafeluw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f1b0aef-0438-4df3-ae99-ff7b76b05b53/93614828456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ba103db-35d1-4cfc-b4d8-336915453363/15323524388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48872dcc-afee-4c9f-899a-476098674043/wardlaw_academy_tuition_2020.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_off00008567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8567 5208 bytes
SHA-256: 71122b6bccd71fc3820968b4ce6725b4de939365972842c4431b970edefc0592
font_01_sfnt_off00009734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9734 11820 bytes
SHA-256: a93ab568eb1ac422bd2eeca0ba25bb4b0f178e121e5d18900106f4fc6fee347a