Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca5e30d31dceb5b1…

MALICIOUS

PDF

70.6 KB Created: 2021-04-06 09:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8c15d1518b0b399c0af3ed22539840a0 SHA-1: 1a59a1805693d8547cfc022d2e4c987b383419da SHA-256: ca5e30d31dceb5b134287beb85e41c15065aa66b479a9b298ab747c3e71f76b6
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 0.9996

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://xezojetit.ru/123?utm_term=s+letter+3d+wallpaper PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466143/normal_6017dd6da3b9b.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/ieKijjc/what_does_ice_cream_parlour_mean_in_spanish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453900/normal_605f2d4e460ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449000/normal_6027d1943cf66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371246/normal_6008cfabb76c0.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/ihgcQZ8/xelunejizijepubuvalogoral.pdfIn PDF document text
    • https://cdn.sqhk.co/dajusonas/ggdgahf/xufenug.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/59e6d0a2-d2cf-42ad-aac1-988b7c876f72/44574740506.pdfIn PDF document text
    • http://xagejerebim.rf.gd/formato_de_arrendamiento_de_casa_habitacion_gratis.pdfIn PDF document text
    • http://divejekojo.epizy.com/12595349159.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/jejesidafoji.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/yahoo_messenger_apk_versi_lama.pdfIn PDF document text
    • http://xotibebigugipan.epizy.com/96017960180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb3caaaf-df79-412b-a3f0-4a398b956886/lg_waveforce_washer_pump_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e1484f-3508-497d-9ac3-921493866651/vudif.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/wimiguratuneminowadul.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/dr._browns_deluxe_bottle_warmer__sterilizer_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e506aef9-cebc-4a89-a467-758fcd26d209/craftsman_25cc_210mph_450_cfm_gas_leaf_blower_vac_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49db8290-c8bf-42e0-8c7a-d2df7272ed38/duzoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd9abed-7bf0-4ae5-a8b8-86ea499eff3f/perdona_si_te_llamo_amor_espaa_reparto.pdfIn PDF document text
    • http://tapalif.epizy.com/peerless_transaxle_206-545c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac31b6e7-3512-44b8-9660-6ca08e5d41d2/75669730962.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_off0000d758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD758 5132 bytes
SHA-256: c5b65d8398fc62be3b1dd783dc397d7d5435c338f9b603e6ed5f80d21881cc84
font_01_sfnt_off0000e8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EE 10828 bytes
SHA-256: 2cd68182760f416220036f1dfbea7294d05fe238ccfcff96e1674bc3a8719e11

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