Malicious PDF — malware analysis report

Static analysis result for SHA-256 97fb5cb70bb9466b…

MALICIOUS

PDF

75.3 KB Created: 2021-05-14 10:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f53ced4cd53e85c0993db940b7156007 SHA-1: 83c2a3f7edf366892f200afc16296fe45f9f2e37 SHA-256: 97fb5cb70bb9466b55e90cb4e28af4810f3263074a11ec59432b9a39fa4ab65a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=braun+series+9+9290cc+wet+%2526+dry+electric+shaver PDF link annotation
    • https://bewizujire.weebly.com/uploads/1/3/2/3/132303264/9051069.pdfIn PDF document text
    • https://migijulomav.weebly.com/uploads/1/3/5/3/135394851/7024034.pdfIn PDF document text
    • http://pojawokoxenin.iblogger.org/gabamoditonozosaj.pdfIn PDF document text
    • http://muvibigi.22web.org/informatica_powercenter_workflow_administration_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450630/normal_606384f70faa7.pdfIn PDF document text
    • https://mefomenixa.weebly.com/uploads/1/3/4/2/134235772/3961240.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426421/normal_5fd065edeafc1.pdfIn PDF document text
    • https://werikaduf.weebly.com/uploads/1/3/4/4/134483952/9845224.pdfIn PDF document text
    • https://tiwokixaxuvap.weebly.com/uploads/1/3/4/2/134235176/napuruzoxe-purevuna-zamevokunej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gulepoko.epizy.com/meaning_of_the_phrase_man_is_the_measure_of_all_things.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8529f49-42fb-4fdf-ab4e-d61c724015ce/reading_comprehension_workbooks_5th_grade.pdfIn PDF document text
    • http://nexopuvesoreben.epizy.com/what_do_you_think_are_the_qualities_of_being_a_good_speaker_brainly.pdfIn PDF document text
    • http://fotiworoz.epizy.com/amparo_indirecto_materia_fiscal_formato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a99425ea-1736-4d69-a55b-97c4671c82f3/how_to_run_java_web_application_from_command_line.pdfIn PDF document text
    • http://tirujukixiw.epizy.com/silaferuxipikuvupagaxixi.pdfIn PDF document text
    • http://reluwiz.epizy.com/rotiwepororagewiduxefap.pdfIn PDF document text
    • http://bikikifuxax.epizy.com/fairy_fountain_sheet_music_harp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af463d9a-ce70-4980-a5e9-e38badc2dbee/59983112913.pdfIn PDF document text
    • http://lipewolitaden.epizy.com/cape_town_fish_market_menu.pdfIn PDF document text
    • http://gapexer.rf.gd/warazekajoxupojomukepav.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_off0000e470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE470 5332 bytes
SHA-256: 988b6452b207d9a0d2ffc89221b7b54ec584c99e6f0a7557c69a192e4025a1e8
font_01_sfnt_off0000f6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AB 11792 bytes
SHA-256: bfe7827285f9a0a553c04d89d4ac5b9f06c97315ccab9c63c86a818b8fde5100

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