Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab4ef105717bc84…

MALICIOUS

PDF

95.3 KB Created: 2021-03-28 17:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 83de50ed135c284e6adcca46a1a61b72 SHA-1: b456b20294403d969ef20a1b76ae9ba9d66e2d4a SHA-256: cab4ef105717bc84a2b11f6422ced4ac731ae863e5ebbeef16ab43837f640f7b
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 0.9993

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://leonvi.ru/strik?utm_term=covid+19+safety+plan+nsw PDF link annotation
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/pafoka.pdfIn PDF document text
    • https://gozobamo.weebly.com/uploads/1/3/4/7/134714837/sipeb-kefezo.pdfIn PDF document text
    • https://mirebaxowani.weebly.com/uploads/1/3/4/0/134017623/tabedarijux-galatejoje.pdfIn PDF document text
    • http://negedibomul.sportsontheweb.net/17347335872.pdfIn PDF document text
    • https://miragojed.weebly.com/uploads/1/3/1/6/131637546/fdf027.pdfIn PDF document text
    • https://lovebaxubifutu.weebly.com/uploads/1/3/4/3/134322000/6a2d5dd4bda0e1.pdfIn PDF document text
    • https://gojelubimutur.weebly.com/uploads/1/3/1/3/131384605/boxip.pdfIn PDF document text
    • https://dubonizu.weebly.com/uploads/1/3/1/6/131606556/zuvokefela_joseti_jeveb_bunati.pdfIn PDF document text
    • https://zujafewisanepo.weebly.com/uploads/1/3/4/3/134322282/594047.pdfIn PDF document text
    • https://kixuvatapowow.weebly.com/uploads/1/3/1/3/131383305/396462.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/bd7f1580-8195-4f88-aa29-89b6a976d0f9/10022940136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3a3c63a-a1c9-4720-9d3c-5a55bf297908/netgear_ac1600_r6260_review.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/65879760287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2379ad5-ecd4-4e12-8460-036f062b90ec/how_to_open_a_sentry_safe_sfw123cs_without_the_combination.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06740f5-2125-40a2-ba9a-b6958aaa55c6/online_quran_tutor_jobs_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ce35eb2-8d56-4a98-8470-7dc9516b861a/gods_heroes_and_monsters_lopez-ruiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be8017cf-7e2d-4fb9-8654-8f72373ddf5b/grohe_shower_valves_repair.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/biddeford_blankets_heated_microplush_throw.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/darefikoroxuxiredafojex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06d22a11-9a2a-4f96-bd9d-80cb580df8f4/97433361209.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/phone_answers_in_speaker_mode.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/critique_of_everyday_life.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/81475757262.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_off00013785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13785 5308 bytes
SHA-256: 7bb5690da500266687a02c1d63fcf116d7594010c5bce77b4a1c730af5cd62af
font_01_sfnt_off000149c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149C7 11260 bytes
SHA-256: 3030d54a7db950372059c5bcab8d6171d8ab4ed067f67a2f507215d1599f5d4e

Open this report in the interactive analyzer, or submit your own file for analysis.