Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aeb824e53014716…

MALICIOUS

PDF

42.1 KB Created: 2020-10-29 19:39:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 510d93a967f5a94ee5319e0f43714882 SHA-1: 6dbe88b760c77133468d413ecbb1e514d20d8a4a SHA-256: 3aeb824e5301471661d5e870483b8d9cfc85a124b4accc393598452953cf7265
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The ML classifier also strongly indicated maliciousness. The presence of embedded URLs and the redirector link indicate an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

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/123?keyword=free+phr+study+guide+2016-2017 In PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/932168.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/fapevawoluwojos_ribuz_kixoji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2347/8179/files/nagemetinozawubidesi.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/marathi_calendar_july_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b39394a-aaf7-4c66-a69a-db80647944d3/54453772718.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/valentines_day_cards_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/pakudubamot.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/pogadomog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/cemalnur_sargut_kitaplar_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/dengeki_bunko_fighting_climax_pc_descargar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/997bdd08-c3c5-4657-aadc-87e0b0bcc021/98811738951.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_off00006307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6307 5628 bytes
SHA-256: f78731098fbd5feac619481841b7222211add4c05ed9624f3a71e24587aa3180
font_01_sfnt_off0000764a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764A 11012 bytes
SHA-256: 49cab79d3bdf72e88be780effe8d4fb24e5278ef3e3e24982320ff2c0308ca56