Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad2eecb7988ab67…

MALICIOUS

PDF

43.6 KB Created: 2020-10-15 19:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cf154bf3b0600fc72a53361e0634e3d4 SHA-1: 53ea8ffd60396d3953ab9a68d9f6f9fed1ca93f3 SHA-256: 5ad2eecb7988ab67a2350636322b5354ec0a555ab6f00eade0fe9bcb61459b91
124 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://gettraff.ru/123?keyword=pelvic+floor+exercises+post+pregnancy+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into visiting a malicious site under the guise of relevant search results. No scripts were extracted from this sample.

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.
  • 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://gettraff.ru/123?keyword=pelvic+floor+exercises+post+pregnancy+pdf In PDF document text
    • https://site-1037856.mozfiles.com/files/1037856/54727462201.pdfIn PDF document text
    • https://site-1043574.mozfiles.com/files/1043574/zikenuza.pdfIn PDF document text
    • https://site-1040239.mozfiles.com/files/1040239/61662754162.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/60216174023.pdfIn PDF document text
    • https://site-1039864.mozfiles.com/files/1039864/12598978714.pdfIn PDF document text
    • https://site-1041598.mozfiles.com/files/1041598/50126120241.pdfIn PDF document text
    • https://site-1036921.mozfiles.com/files/1036921/26673952250.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f8751f02d65f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f874e2d20303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f88594917a45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370304/normal_5f884132809de.pdfIn PDF document text
    • https://site-1038799.mozfiles.com/files/1038799/mimikepozodovolenomixit.pdfIn PDF document text
    • https://site-1039998.mozfiles.com/files/1039998/83492921935.pdfIn PDF document text
    • https://site-1038618.mozfiles.com/files/1038618/54048038310.pdfIn PDF document text
    • https://site-1040008.mozfiles.com/files/1040008/pilakaxurimevatewurevedaf.pdfIn PDF document text
    • https://site-1040509.mozfiles.com/files/1040509/9566863132.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/1/0481/3881/3589/files/86757159328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7711/7125/files/68918364687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0826/4862/files/deathcounter_and_soundboard_delay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/2876/6630/files/bmw_1_series_auto_or_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a4e5ce5-2910-46b2-8ae8-b3cdb4861dfe/natiladob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09684ca6-caf0-45b3-a675-37496418693d/33383976139.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_off00006a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7C 5556 bytes
SHA-256: d8a4623a5c1fe763eaadd76d248a8ea75e54fb57f97463e69c28111adc797c92
font_01_sfnt_off00007d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D78 10368 bytes
SHA-256: 5c10cf0e3e3a9866a4468b1c12bb6cdb36ff53b6f2cb8b3c90730abe6fc886fd

Open this report in the interactive analyzer, or submit your own file for analysis.