Malicious PDF — malware analysis report

Static analysis result for SHA-256 489e6f2ef8bff3cc…

MALICIOUS

PDF

78.1 KB Created: 2021-04-03 23:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1e6b2001e49c2c83986ea4c3a451b87c SHA-1: 1688b24f5760267273cab3a2779b204960ba30f2 SHA-256: 489e6f2ef8bff3cc603c05194c0bfc308f505b32c50a42e91d93cc3d6bedcee5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9992

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 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://nipisod.ru/strik?utm_term=engenius+durafon+1x+battery PDF link annotation
    • http://kotigowaxed.iblogger.org/clinical_trials_design.pdfIn PDF document text
    • http://zakazuvanadoze.66ghz.com/battery_percentage_apps.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ba03190-53c0-4b9c-8a0b-f2c9d133530c/camping_merit_badge_requirements.pdfIn PDF document text
    • https://0c17d2ad-06a2-4efd-9128-26148cac6670.filesusr.com/ugd/44320b_549633179f8540efac5d486e85411c54.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/preset_attarakha_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/zixamukilaputijutamarij.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/18921899263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b4204f-5998-41e9-90b5-737805c4a28e/the_girl_you_left_behind_summary.pdfIn PDF document text
    • https://19a39513-20cc-49d1-a75c-e30ce0314142.filesusr.com/ugd/f99735_c7de58d269ea45ef9d91e821b870a4db.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/lajokubabirewumijasupumaw.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/conair_1875_watt_cord_keeper_hair_dryer_aqua.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a7cb395-e1e8-4fee-aa31-73cae10a3a94/2371566104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f34c7e9a-c17c-4b71-b62f-6030ad111bf2/kusogegeruda.pdfIn PDF document text
    • http://sizixezaratog.rf.gd/63072147019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b674de3-0e1e-40ac-8bea-c6b6d286a401/gosiwesitafiwokepovo.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/acer_predator_helios_300_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/xekunovodipawolagumi.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/a_short_guide_to_writing_about_film_9th_edition.pdfIn PDF document text
    • http://wozojatoxako.epizy.com/vubibubarovuzamik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c79404-7cc6-434a-8c6d-60073fccb86a/is_dreaming_an_indication_of_good_sleep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68497cd9-5fde-4069-aa80-811bd31c4708/53613284824.pdfIn PDF document text
    • http://xekurenu.rf.gd/98308889648.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/lejotizifotukimaterog.pdfIn PDF document text
    • https://0e733887-fd72-4d21-8b10-0a39cafbc931.filesusr.com/ugd/1e4d10_f0079bd41ad94af28223f8e3a770441a.pdf?index=trueIn PDF document text
    • https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_13d127e75d3c41f0b90b35587c176b03.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_off0000f315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF315 5364 bytes
SHA-256: da47a7da7ceb7c8f1e6f5d619a9a7a0771ade379a8b831ebbf721eca0ab80342
font_01_sfnt_off00010578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10578 10968 bytes
SHA-256: f2190fbf23434ff8fc848a0399c8ba83f3f29aad107ae0ee8332e672674428a0

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