Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17564993b80096d…

MALICIOUS

PDF

72.9 KB Created: 2021-06-07 22:23:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 74d1fc2721d91180387dd1819dbde5f2 SHA-1: e24af69283d344470428353b5b833d8316b37643 SHA-256: d17564993b80096d0429d6e239bb1e1bdcfb4e9f0ecb1549e118f9a990ad81c0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, with one pointing to 'allytemp.ru', suggesting an attempt to redirect the user to a potentially malicious site. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports a malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://allytemp.ru/pbw?utm_term=how+to+transfer+contacts+from+lg+tracfone+to+iphone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414331/normal_60065ae7b203b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416316/normal_600ddb5645a30.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4390684/normal_60b08a6bb5f97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vimadutukad.pbworks.com/f/how_accurate_is_birth_chart_compatibility.pdfIn PDF document text
    • http://pefagisunel.pbworks.com/f/koribusesamuselomavobiraj.pdfIn PDF document text
    • http://jesababa.pbworks.com/w/file/fetch/144413601/43499665926.pdfIn PDF document text
    • http://raxonepem.pbworks.com/f/what_is_an_example_of_specific_deterrence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8d0c596-1504-430d-8376-2296651ec013/29176396937.pdfIn PDF document text
    • http://fogofalo.pbworks.com/w/file/fetch/144697746/goduxogojurenatibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/515335e7-01bc-4138-9987-58b897181b6b/can_you_ask_tarot_cards_yes_or_no_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebff4ba9-b963-414c-9205-24cc8aeb8be9/55866452304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c549e219-5cfe-4362-ac2c-a429ae0a6ce5/jesus_mi_fiel_amigo_acordes_para_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a7d537-e297-416f-81f3-81c0b9c07ef2/multiplication_worksheets_for_grade_2_with_pictures.pdfIn PDF document text
    • http://kafunujazuwo.pbworks.com/f/88576243421.pdfIn PDF document text
    • http://sufasujozu.pbworks.com/f/mefajuli.pdfIn PDF document text
    • http://bunemirudezo.pbworks.com/w/file/fetch/144691731/kenyan_meals_recipe.pdfIn PDF document text
    • http://josinibugaju.pbworks.com/w/file/fetch/144692364/momujomovomupapixubareb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/371da7dc-a9f8-4d74-9512-03d9eabe9d1e/kitchenaid_artisan_stand_mixer_repair.pdfIn PDF document text
    • http://watapabipos.pbworks.com/f/cuanto_es_1_metro_90_en_pies.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_off0000df1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1F 5480 bytes
SHA-256: 9f22e4a21aa4d9902f89a1ea830bfa48cf8db9ec86eed300487589b5398196e3
font_01_sfnt_off0000f1ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AD 10788 bytes
SHA-256: d1b0a60d73e5b4922263a4474cdfff3456ed6d6e479f1f26c8a36356ceb342f2

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