Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6161778a9034a1…

MALICIOUS

PDF

44.3 KB Created: 2020-10-27 14:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4ab54002993e1af2bc1b9cea0942fbbe SHA-1: 90e394f17c3a2dfa93c2e5247a70aaa61eb04773 SHA-256: 2b6161778a9034a1fe706cd6ce4b78cee206e7d09e41ae5b071543d4752c0b72
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with the primary one redirecting to a malicious URL disguised as a search result for 'barbie horse adventures wild horse rescue wii'. This indicates a phishing or scam attempt, likely to lead the user to a compromised site or download further malware. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector.

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 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.
  • 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=barbie+horse+adventures+wild+horse+rescue+wii In PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/8022475.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/rinefejatabezexa.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/gonoxutiduzalas.pdfIn PDF document text
    • https://lokugejepotag.weebly.com/uploads/1/3/4/3/134318746/nesiwumivapelubuvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_5f8f6363aabdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f8d98d2d1ee3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f96d1e381ca7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f8cf69e97811.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407331/normal_5f945d33ed8b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f8844d1a1f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_5f903eec9a3a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_5f914ebea1b0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f91752e50815.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/wonoti/51929662918.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/zagabesosedixolorur.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/vukumimolepe.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/vives_oligopoly_pricing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d19dd212-7d08-4aa7-ab22-c5fd8d99aac0/wajununogiraxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c816e04-709b-4de2-83ce-deb72ae5955e/79886422575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6169c7f-f92b-4ebc-9d38-b8ad6f7b3be6/67296730658.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ae8bdb9-7b32-4cbb-bacb-447e7a4ebce4/godewazapajuzigat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e25ff2c7-7313-4875-8a05-c4fc33b11fb6/kasafegulevapes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b48765a5-7c74-4805-9a4d-468e06a48aad/agnisakshi_serial_audio_song_naa_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59b29f5d-d3a4-4f51-babf-9f1614b02db7/ielts_writing_task_2_vocab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66c2279e-9a52-43df-ab48-e3e1292d4bbd/kevaxaripokibosuvad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8b4404d-12ee-4f40-b434-9f7211d827d6/5537200207.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_off0000684e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684E 5368 bytes
SHA-256: 2433ac6d13497511f7a9bbd15424a705224e4637b634515a1067da424d29ed40
font_01_sfnt_off00007a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 12836 bytes
SHA-256: 79a668fbbbb8f98f9864b3036cfcc8597b5ed9a66c540c155fb8f9ee5ff63212