Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f6c9924cef5e8e…

MALICIOUS

PDF

84.8 KB Created: 2021-03-05 07:59:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: abebf5e4becf954b37e15b665d169dcd SHA-1: d852e4f912531bdedbe27e3129b2ee7378ba51f0 SHA-256: 84f6c9924cef5e8e689ff3f62886dd2a953cf15f6d36aa04a954982ca7920de4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary external URLs, 'https://botokaw.ru/wix?keyword=barrows+armor+guide', is suspicious. ClamAV also detected the file as 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the link farm suggest an attempt to redirect users to potentially malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=barrows+armor+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421350/normal_5ff09840019eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_600ff8504319e.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/jaPvaHo/9763589113.pdfIn PDF document text
    • https://cdn.sqhk.co/koxajavu/jcGZigv/wipajete.pdfIn PDF document text
    • https://cdn.sqhk.co/sakixowofeg/RZr0iPn/insect_repellent_sound_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455207/normal_6007b854c4d7e.pdfIn PDF document text
    • https://cdn.sqhk.co/lotivadafe/Hiigeon/screen_recording_with_audio_iphone_11.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/KKhicgh/hideo_kojima_twitter.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/dowavelaxam/93473178513.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/88854141061.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/persuasive_essay_planning_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/chita_animal_information_in_marathi.pdfIn PDF document text
    • https://153f2bed-3501-4ec5-9468-ed1987511f6d.filesusr.com/ugd/f67134_ffa04d69758e432db8f4cbf22bec05c5.pdf?index=trueIn PDF document text
    • https://2eeb51df-07ba-4372-80d9-1ef4646fc7f7.filesusr.com/ugd/6af210_8a24288b6739437dab34a813f0b4c14e.pdf?index=trueIn PDF document text
    • https://a79fbd7c-12a6-44fe-9d3c-43dc2b0795a8.filesusr.com/ugd/f95141_63846ac08f9d469b9322a349d3e9602b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zosevid/bts_mic_drop_video_song_free.pdfIn PDF document text
    • https://01dc7cc6-b8ed-446e-8cc8-1ad78882ed38.filesusr.com/ugd/e23fbb_bb7ef69817b44688a77e2b7e5dc4ca0d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/how_to_rap_like_eminem_freestyle.pdfIn PDF document text
    • https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_2867a72ab4214aa39b934e69572dfd80.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/interest_groups_icivics_answers_the_potato_problem.pdfIn PDF document text
    • https://8909b315-4d59-4940-aabf-0fdaa532e0ad.filesusr.com/ugd/4542d9_a11ca9f0469449b9be822440c44b74ce.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_off00010fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB7 5252 bytes
SHA-256: 65c576fb2ac322d32172a8ce08d4facae8ca9f93d1677d4bac14e94c80df6c2c
font_01_sfnt_off0001218f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1218F 10632 bytes
SHA-256: ca842846f1f82591baaceb909bfdc706e766bb9419efee5ea0ee8892d978bbbc

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