Malicious PDF — malware analysis report

Static analysis result for SHA-256 34185939e8063983…

MALICIOUS

PDF

70.4 KB Created: 2021-01-17 14:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0832f13b6d8a1c8ca730a76c2f5905b4 SHA-1: 9993bb2f7f8e436020a9e2d48a8c559b06285865 SHA-256: 34185939e80639837aec24abda17933b8409eebb6050e58edb1fdcbb5d03a16b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV. It contains numerous external links, with one prominent URL leading to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to 'Paw patrol colouring sheets to print', indicating a phishing or social engineering attempt to trick users into clicking the malicious link. No scripts were extracted, but the presence of multiple external links and the ML detection strongly suggest a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/aws?utm_term=paw+patrol+colouring+sheets+to+print PDF link annotation
    • https://letitunonagafi.weebly.com/uploads/1/3/4/4/134494227/3440429.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/hiiwiin/60903374792.pdfIn PDF document text
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/xojaparikiloxuv_kunevadekudinub.pdfIn PDF document text
    • https://ribigitapupag.weebly.com/uploads/1/3/4/8/134887221/d9e47f85460.pdfIn PDF document text
    • https://cdn.sqhk.co/kapopajij/gjS8Uij/25765221214.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383160/normal_5fe37ecee434b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387702/normal_5fcf595453e93.pdfIn PDF document text
    • https://gidaletibom.weebly.com/uploads/1/3/4/8/134881461/todinepufis_xitewebe_zepujujutixup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f870158b84f9.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/hbidhaU/can_you_escape_the_50_rooms_level_13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_5fbd7c85366b5.pdfIn PDF document text
    • http://nimened.66ghz.com/kubudaporunafux.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarasam/LjbhjlX/modern_sofa_design_2020.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/gafedupeba/elementos_que_conforman_los_metales_alcalinos_terreos.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/teboxigitusulabudubanepuz.pdfIn PDF document text
    • http://mapexas.epizy.com/72539956936.pdfIn PDF document text
    • http://tunowik.epizy.com/nimimevuna.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/excel_calendar_template_2019_2020_editable.pdfIn PDF document text
    • http://luwefotikejumu.rf.gd/hollywood_movies_free_in_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/pobofit.pdfIn PDF document text
    • http://nakepusejedub.epizy.com/42087197985.pdfIn PDF document text
    • http://fusuxitizubuka.epizy.com/blender_human_model_free.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_off0000d5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AF 5288 bytes
SHA-256: 82b92e01ade3b5a1c94e8faf9ce479a1933703a9920ba25f8787e75a48c8b9d4
font_01_sfnt_off0000e7b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B8 10632 bytes
SHA-256: f78330bf47ebe636982a4345b64b2691f5c19dff43512e4657d8583591aeb3cd

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