Malicious PDF — malware analysis report

Static analysis result for SHA-256 32918a6bb046996b…

MALICIOUS

PDF

69.2 KB Created: 2021-03-14 15:19:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d24f765ef0fde2bb87c0ae1130b2c074 SHA-1: f9febe715449e3a05c61d5ca8ce30b9d74277f13 SHA-256: 32918a6bb046996bd24e3e94c4500eb72b0decccc530090b4a03c7c1b6262949
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with the primary malicious URL being https://pelibifir.ru/award?keyword=erosiones+de+cameron+pdf. Heuristics indicate this PDF is part of a link farm hosted on disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature.

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://pelibifir.ru/award?keyword=erosiones+de+cameron+pdf PDF link annotation
    • https://cdn.sqhk.co/lugizumevemu/iajadhd/skillmill_price_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/f2ijjdq/zasaxowanabilomewu.pdfIn PDF document text
    • https://cdn.sqhk.co/vedasukuki/bsp7jaW/84938200225.pdfIn PDF document text
    • http://xuxijosut.sportsontheweb.net/antibiotics_choices_for_common_infections_2020.pdfIn PDF document text
    • http://xazonojader.mywebcommunity.org/potebenelurumofedatikuxe.pdfIn PDF document text
    • http://milixowegamu.22web.org/jugusavojavotaxo.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/gemhbwg/12280415655.pdfIn PDF document text
    • http://luzibis.iblogger.org/how_to_write_a_story_review_example.pdfIn PDF document text
    • http://luxisulejoxo.getenjoyment.net/makkar_ielts_speaking_file.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/hafkice/fox_world_series_2020_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/zgglib7/super_fowlst_2_app_store.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/nazekisigiduz/17401763115.pdfIn PDF document text
    • http://javidukasomeg.epizy.com/devagavijedilemopovutewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c01b8897-d7a9-4ff4-b311-fbdf6a18cbdc/8882934237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f099cd77-e582-4c75-a3e2-1d2c31b90e49/snugride_30_vs_30_lx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d545fc8-dd86-47e8-9855-e87f7f0cb39f/how_many_gallons_of_oil_does_a_detroit_60_series_take.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f329794-ce3d-4f21-968c-bd09f8b7b6e4/how_do_you_determine_the_hardness_of_a_rock.pdfIn PDF document text
    • http://pozadel.epizy.com/95389676359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19d7eb80-3444-4a16-b5bc-018a8c44f635/85828874249.pdfIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/175351651.pdfIn PDF document text
    • http://tunawibiga.rf.gd/metokejipujoxama.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/46114406386.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_off0000d23f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23F 5228 bytes
SHA-256: f4a2372eff15b305ee83cd512c8c1b1b0e8dc762848850e427d7e634a0b278b4
font_01_sfnt_off0000e3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F6 10500 bytes
SHA-256: edc658d821f89d527c1bf561793ce76c7333ad15b39232f0aca622fbfb8e1405

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