Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba29c1e5b884325b…

MALICIOUS

PDF

73.1 KB Created: 2021-03-12 02:06:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: aa8064a0b62f54f1a62b0ca0e7204ed1 SHA-1: 28d0ce972f5615b76d0162b3c55842a46e566b0f SHA-256: ba29c1e5b884325b371bc4f1fcebe9f8b0b99c2df7b4de5c7b51d9905a9a4616
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm PDF hosted on disposable domains, with numerous embedded URLs pointing to potentially malicious content. The presence of external URIs and the 'link farm' heuristic strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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://maypoin.ru/aws?utm_term=how+he+loves+us+lyrics+john+mark+mcmillan PDF link annotation
    • https://wituzizotavukoj.weebly.com/uploads/1/3/1/6/131606330/5785039.pdfIn PDF document text
    • http://tafagejiveduda.22web.org/how_to_fix_a_sanyo_tv_with_no_picture.pdfIn PDF document text
    • http://nijopepeviliwe.22web.org/dell_7010_sff_service_manual.pdfIn PDF document text
    • https://gifolavetufo.weebly.com/uploads/1/3/2/6/132695571/kewela.pdfIn PDF document text
    • https://gixebodaloru.weebly.com/uploads/1/3/1/3/131379223/07e4ee4b.pdfIn PDF document text
    • http://wiwuwanulujero.iblogger.org/16127410294.pdfIn PDF document text
    • https://wivezinafixozut.weebly.com/uploads/1/3/0/9/130969190/luzetogagad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_30154fe231a64caf8f9f83c0a15bcf52.pdf?index=trueIn PDF document text
    • https://75edee45-cd08-43cb-a752-0c33e5c2343f.filesusr.com/ugd/a7c173_c0fb8dd7ba694f18b60a29133265bbbc.pdf?index=trueIn PDF document text
    • http://fegixifew.epizy.com/hobart_handler_140_mig_wire_welder_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/fur_elise_clarinet_sheet_music_easy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3d736f9-4c3e-4ee7-86fc-dc4a875a4404/13775610374.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/alveolar_osteitis.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/texoxuminokepof.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/18316327794.pdfIn PDF document text
    • http://kavolimuteso.epizy.com/candy_crush_soda_mod_apk_200_moves.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/bhaigiri_dialogue_status_marathi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1529f684-cb85-4495-91c0-7c36405f6a98/where_two_tectonic_plates_meet_is_called.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21523c59-4224-49d1-808a-374e56140791/rosaxajifi.pdfIn PDF document text
    • https://ee67c5b3-b4d3-4257-b425-af55881d3a68.filesusr.com/ugd/c60da7_530bd6397ff44eafb907c7b405d10109.pdf?index=trueIn PDF document text
    • http://sakupoje.epizy.com/padi_open_water_diver_manual_knowledge_review_one_answers.pdfIn PDF document text
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_4ef4ebd1db17466c81a8005377255683.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_off0000e076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE076 5396 bytes
SHA-256: 830a6878a05d8268e1cd153085a930012de0559f933fd7ed187cac51bef73f04
font_01_sfnt_off0000f2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BB 10520 bytes
SHA-256: 75781e1ded3367e795f89205a1505f9c47ec61166d577ac360c0a4352b10336d

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