Malicious PDF — malware analysis report

Static analysis result for SHA-256 3507da77711cda4b…

MALICIOUS

PDF

49.2 KB Created: 2020-10-15 00:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ba1370bae398b501fecd8c5061162340 SHA-1: b9f7365c3783b711ebe278e23acf933f64f73c08 SHA-256: 3507da77711cda4b7878ca48e726282f5f93aee18adce3ccafc93330ed0977a3
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ttraff.com/pify?keyword=vidmate+update+2020+apk In PDF document text
    • https://site-1042971.mozfiles.com/files/1042971/lalepefazilodijapaxi.pdfIn PDF document text
    • https://site-1044239.mozfiles.com/files/1044239/webukadebotiwadif.pdfIn PDF document text
    • https://site-1041485.mozfiles.com/files/1041485/adjective_preposition_collocations.pdfIn PDF document text
    • https://site-1043523.mozfiles.com/files/1043523/90353354831.pdfIn PDF document text
    • https://site-1042725.mozfiles.com/files/1042725/vaguzaxitefosenino.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f876cd945b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8725d38ae85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f8769a1a7318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5f876e33f0f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f876d17b3897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f874c4248f35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f87725fc51ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f876f0b32230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f876e4026cc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f87092dd09ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f875ea819ce3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f876a1279b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f876f363de89.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/43edc1b8-cf1f-4586-a435-0b8154669527/49454928372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39618709-e0ad-47cc-a2ab-f33573059c7b/pigotijinejumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8786/2429/files/sony_android_tv_x7500f_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4930/3195/files/zunimerikil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/6867/0119/files/led_zeppelin_complete_songbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/communion_after_dark_all_covers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/bodyweight_exercises_for_beginners.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7307 2952 bytes
SHA-256: 013fc9f45313cdddd5762e6694753e55f6a85ad2eec225b6e17fd140af1ee5c7
font_01_sfnt_off00007d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D96 5100 bytes
SHA-256: 6c7e9e170a09fda00d2645209e49001b4449c9609c436bf3cbbd0a2e653c5957
font_02_sfnt_off00008edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDF 12664 bytes
SHA-256: 711a9c28e2cd7e84b28f9e3f9ac6d2b8eb7894e06ad0f4fa0816ad58906cb8f5