Malicious PDF — malware analysis report

Static analysis result for SHA-256 f476341afa050d16…

MALICIOUS

PDF

42.1 KB Created: 2020-10-31 13:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 4e23a82df4a1f48bb57edd19a910c491 SHA-1: 1e5a16019a535846e52510f446c83cb222e099ab SHA-256: f476341afa050d16258719e6bef92d979f8a74cd9fb896dc72863ce6a16276ad
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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://ggtraff.ru/aws?keyword=gifts+of+the+holy+spirit+activity In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5f94a920c5e86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5f93ea3367a03.pdfIn PDF document text
    • https://ropoxazuwaso.weebly.com/uploads/1/3/4/0/134040565/vewavuxexe.pdfIn PDF document text
    • https://senapuvuv.weebly.com/uploads/1/3/4/4/134459053/f72377ac.pdfIn PDF document text
    • https://nogegonimever.weebly.com/uploads/1/3/4/3/134340032/goritajuv.pdfIn PDF document text
    • https://bidutujube.weebly.com/uploads/1/3/4/4/134403342/vinamamo_gidiru_kidubi_wawaza.pdfIn PDF document text
    • https://fofafobef.weebly.com/uploads/1/3/4/3/134349457/jarodevarop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389085/normal_5f968a35e5fc4.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/muradow_xojipiwigoluse_jubapimi.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/tolubikajotul-satuxejer-woxuw-pazamedazit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_5f89e9953c8e3.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/1/0492/7756/7132/files/88077301222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fb9b6f0-2488-4b51-8cc7-dd2678f630f8/black_and_decker_firestorm_battery_14.4_v.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8696/8480/files/global_history_regents_review.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_off00005deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEB 5296 bytes
SHA-256: d32e9f3462b3ef65f6fad269f71d767463b180e82c2524168fbcd5f3846264d1
font_01_sfnt_off00006ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF5 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00007882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7882 10288 bytes
SHA-256: e69898c11a9a228b5c8a88f27d995d02bef71e8bcf4cec8debc192709d9c2a08

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