Malicious PDF — malware analysis report

Static analysis result for SHA-256 605bdb874fa1cc01…

MALICIOUS

PDF

77.4 KB Created: 2021-03-26 08:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 01f9c4b233f4386ff1ce040fd1e63610 SHA-1: b3df04f452511db7b51207b6c3a87d6729dc91e4 SHA-256: 605bdb874fa1cc010b89ee69ae6cdf8c8165439468d1b96eb5e6088487b7ed12
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. The primary URL, 'https://botokaw.ru/wix?keyword=bluets+maggie+nelson+pdf+free', suggests a lure for search engine optimization or phishing. ClamAV and an ML classifier also flagged this PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the structure strongly suggests a phishing or malware distribution attempt via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • 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://botokaw.ru/wix?keyword=bluets+maggie+nelson+pdf+free PDF link annotation
    • http://ewwe.space/baseus_encok_w01_user_manualiepd6.pdfIn PDF document text
    • https://cdn.sqhk.co/mugodetutag/njjuieF/jiomeet_review_quora.pdfIn PDF document text
    • http://kittyplay.online/imagenes_del_sistema_endocrino_en_ingleshyfgb.pdfIn PDF document text
    • http://kamaz-ftc.com/8_ball_pool_hack_ios_2020_downloadhuyrz.pdfIn PDF document text
    • http://zukoretevir.medianewsonline.com/bible_tagalog.pdfIn PDF document text
    • http://rubolanir.mypressonline.com/pan_card_online_print.pdfIn PDF document text
    • http://smartcreditus.info/food_dehydrator_replacement_partsrcoiw.pdfIn PDF document text
    • http://losinglotterynumbers.com/fufukuleruketapapujy65nn.pdfIn PDF document text
    • http://niwifara.22web.org/29490121358.pdfIn PDF document text
    • http://rabusog.22web.org/how_to_format_lenovo_t430_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/febalotifako/tihYjft/20254146332.pdfIn PDF document text
    • https://cdn.sqhk.co/gakilofod/hfs8opo/wrecking_ball_overwatch_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/3v7wR96/car_crash_simulator_royale.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/boxalewijim/48241268404.pdfIn PDF document text
    • http://risogida.rf.gd/comparing_and_contrasting_worksheets_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/sabimafa.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/live_listen_on_android.pdfIn PDF document text
    • https://0793e221-2e7e-4176-aae8-4ff4b75d8f7a.filesusr.com/ugd/64bd79_a53b409d4dbd444b8e49b732f8603384.pdf?index=trueIn PDF document text
    • http://kixixiwibatogit.epizy.com/medicinal_plants_amla_information_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/gerakijalogezowusotugalup.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/alfresco_community_edition_32_bit.pdfIn PDF document text
    • https://4779f2f8-a33e-4327-9c78-21ee0bcf4620.filesusr.com/ugd/31bf02_63d62a113b7f460da1104781d65da2e4.pdf?index=trueIn 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_off0000ed08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED08 5408 bytes
SHA-256: f94307ff00c03ed81fac2c8abefff6cf090020a1ac811669997bf042dbe9054a
font_01_sfnt_off0000ff5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5C 11744 bytes
SHA-256: 10eec675c6f8d0c32db4859dc0279f2484aa01bdc29d598fb7eab61fdda6b00e

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