Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da8b3c3f85fc6b4…

MALICIOUS

PDF

42.5 KB Created: 2020-10-03 05:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fd30fa77b28d2153531766a888f5574e SHA-1: b80a9b9baf4d834f6d3378c049d4fdf4371d59d5 SHA-256: 0da8b3c3f85fc6b4fcfa9db5fd4edce64d7b380222ad62aff38c6a76cecfc917
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, 'https://gettraff.ru/strik?keyword=tiny+titan+water+heater+manual', is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

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://gettraff.ru/strik?keyword=tiny+titan+water+heater+manual In PDF document text
    • https://site-1040208.mozfiles.com/files/1040208/widiweteguximu.pdfIn PDF document text
    • https://site-1038455.mozfiles.com/files/1038455/pewofiwonukagejujizavili.pdfIn PDF document text
    • https://site-1041676.mozfiles.com/files/1041676/81153839063.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/85dfeefb-9505-46d2-bd06-d6323d777175/69946914307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0005be7-b432-4ed1-8880-96ba84c8be08/41196816679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8947d480-5d06-45c1-8adb-9a1025260e6c/70664998006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c5fa955-5183-4055-bed5-62d413a0360d/44915043668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0428/4061/files/jawiguvojokumoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/vysor_pro_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9935/1965/files/35690601469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/0023/8748/files/dr_dre_compton_album_download_free_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5491/5488/files/tofatufugobumewura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef8e274-f11b-46ee-a940-3f00a12ff9fe/majipavow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ddd5ab8-4b6a-4b0e-bc37-92ccc927e6ef/bifalatefaxetiximosulubik.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_off000068ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EA 4888 bytes
SHA-256: eef7361e2d99144cccf97dc58d426f9e50824edb2c192d3876490dc67878f35b
font_01_sfnt_off00007973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7973 10472 bytes
SHA-256: 0ae00f63be582ef20145482f85798ad18f8b0c7ac60e27f111c99d7e2231481d

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