Malicious PDF — malware analysis report

Static analysis result for SHA-256 7acd1960c672674f…

MALICIOUS

PDF

45.0 KB Created: 2020-11-03 08:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3ee90f602d40ea08b4ca1806f2d2256f SHA-1: 4ed6490bb4e263b616634ec17d010f623a372136 SHA-256: 7acd1960c672674f65110467c210dbf71a461e95874e87d07190ac6579657173
134 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically 'https://gettraff.ru/aws?keyword=stone+poneys+dvd'. This suggests the document is designed to lure users to a malicious site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?keyword=stone+poneys+dvd In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5f90cf8101adc.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/vifotatilaw.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/kavitokolezub/algorithmic_trading_chan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ede98dfc-d96e-42f0-9da1-23a80945e9ff/34348261245.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/13987286263.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/reflector_2_apk_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2713d79-6d59-47dc-b746-539775a33e6e/75662075314.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/burger_king_assessment_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a373a9-9acc-4411-b3d4-4436f6e26312/22742143902.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d727c41-a9c6-49c0-9798-a009edaedc6b/br.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/reciprocal_of_1_20.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2a1f386-ba1a-4e82-a41f-cb02b9939bc6/diravuroxinipotebofabunoz.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_off00007014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7014 4880 bytes
SHA-256: 9dcb2b691d1431e82b78dce08592ce436f1294680633a831647ff4fcd3590062
font_01_sfnt_off000080d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D2 11496 bytes
SHA-256: 63967726e4f5d2720ceab699d4b78e689eeb9012f8ea445a3ae8c0684ce05e07