Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bebddcee3fc42cc…

MALICIOUS

PDF

82.9 KB Created: 2021-03-02 14:20:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bcad70a0f143849f9732f68fae382b0c SHA-1: 74c19b2f098958021f08cd2316858a757715ce9d SHA-256: 2bebddcee3fc42cc2976cfdb7895e61825b35b5c598e4123f2b4feb5ea17ce0c
156 Risk Score

Malware Insights

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

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-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://baarspo.ru/123?utm_term=bright+line+eating+meal+plan+ideas PDF link annotation
    • https://komibaxes.weebly.com/uploads/1/3/1/6/131606619/jonarofaguzezu_sajekolewonol_puvezoxukev_polaxozorabavox.pdfIn PDF document text
    • https://xagigerabep.weebly.com/uploads/1/3/1/4/131483632/8d9ea5a.pdfIn PDF document text
    • https://dunawotota.weebly.com/uploads/1/3/1/4/131438316/zimolozigu_sadadexi_wedex_pesisopox.pdfIn PDF document text
    • https://kobetuditi.weebly.com/uploads/1/3/4/4/134446504/kubaz.pdfIn PDF document text
    • http://tebifujokejub.22web.org/5019024382.pdfIn PDF document text
    • https://tuwebuliwarukor.weebly.com/uploads/1/3/5/4/135400964/3942217.pdfIn PDF document text
    • http://ziponep.22web.org/feramabiputedumajo.pdfIn PDF document text
    • https://daxapiruxibi.weebly.com/uploads/1/3/2/7/132712323/3434069.pdfIn PDF document text
    • http://mizojod.iblogger.org/fupuwepekunajexodubika.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/zalomi/93438394972.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/flysky_fs-i6x_firmware_update_cable.pdfIn PDF document text
    • http://didazejitikav.rf.gd/dawixufa.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/85675994004.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/report_gdpr_breach_email.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/5292023083.pdfIn PDF document text
    • http://vezenupu.epizy.com/baldi_s_basics_field_trip_demo_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/chemistry_chapter_11_stoichiometry_test_answers.pdfIn PDF document text
    • http://powosegunivu.epizy.com/730683232.pdfIn PDF document text
    • http://devisufuxuvit.epizy.com/pottery_barn_christmas_crib_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/chitta_punjabi_song_ringtone.pdfIn PDF document text
    • http://gogewafusa.rf.gd/46536283347.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_off00010426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10426 5420 bytes
SHA-256: 99a88a3105efa135f29dfc83ef1364148e99eada20e4341272963002c6eda4b5
font_01_sfnt_off00011669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11669 11200 bytes
SHA-256: a80db5370ec3e5ccca0409d54a8fd1ec799e0e4ce9a07f33108baad6c9a30c4a

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