Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a58495df9492dd…

MALICIOUS

PDF

67.2 KB Created: 2020-12-28 01:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1c0889592779a44950a8ab8a8fd2e3f1 SHA-1: 97a731371c9f55d726c53bc66a01bd1f109720f9 SHA-256: 96a58495df9492dd2baa4b3adc0ef1435c8482ff32b6fcc8924be17c385c37e5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/wb?keyword=aliexpress%20us%20login', which is likely a phishing lure. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to deliver a malicious payload or phish credentials. The document body, though heavily corrupted, contains fragments that might relate to login pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/wb?keyword=aliexpress%20us%20login In PDF document text
    • https://cdn.sqhk.co/poxufape/9AjehhQ/samsung_internet_browser_fur_windows_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460076/normal_5fb327e28b498.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/gukewes.pdfIn PDF document text
    • https://pikoxujedogusu.weebly.com/uploads/1/3/4/6/134665618/2464540.pdfIn PDF document text
    • https://fojejebub.weebly.com/uploads/1/3/4/2/134265807/wixunanenemubo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464055/normal_5fce8bc5aa5bf.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/45193a5a-4a3e-4f80-bd16-49b9aaa87639/11510690664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a047a7a7-1436-4c27-bb6c-52a241ecb0ab/lilabegiru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcacba73-87ef-4ddc-bd0d-8fed4d834009/33242830882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55316320-2bb5-4f8f-8866-fbae5703e4b6/the_carb_nite_solution.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_off0000ccf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF3 4836 bytes
SHA-256: 090c38f276a1abcf0538e5ca5302125458eadd891e0e7a4628413b5d79672e87
font_01_sfnt_off0000dd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7E 10372 bytes
SHA-256: ff35e57447f99f86babc59708a1cf7e00bd8388b2b0947db15ac27e247e60edd