Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a62f63e97c4d3ba…

MALICIOUS

PDF

82.6 KB Created: 2021-05-13 09:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d0bc10edb68800dea0f576d1a81549a4 SHA-1: 514025f2c52df43f07177dc52666adf25641818d SHA-256: 1a62f63e97c4d3ba1dd57c77eb1e5fb1252a7d795450ff488f76de262f0a3ea5
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://baarspo.ru/strik?utm_term=is+one+of+us+is+lying+becoming+a+movie PDF link annotation
    • http://raxewapikeb.mygamesonline.org/localized_irrigation.pdfIn PDF document text
    • https://cdn.sqhk.co/bofilewidil/gcSjcUg/disable_lock_screen_windows_10_when_idle.pdfIn PDF document text
    • http://mitisavad.getenjoyment.net/16108367017.pdfIn PDF document text
    • https://cdn.sqhk.co/pudamunipum/keggieR/adda247_app_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/YFjaspH/remuzafijirufoxugejuv.pdfIn PDF document text
    • https://cdn.sqhk.co/najadiwun/bjcjf4D/application_for_name_correction_in_cbse_marksheet.pdfIn PDF document text
    • http://dolugonowavogo.iblogger.org/apj_abdul_kalam_tamil_kavithai.pdfIn PDF document text
    • http://jujavekerubeko.scienceontheweb.net/foxolakive.pdfIn PDF document text
    • https://cdn.sqhk.co/xederebat/bNhcHBo/facebook_lite_download_for_pc_64_bit.pdfIn PDF document text
    • http://gimemuwet.mypressonline.com/78794742008.pdfIn PDF document text
    • https://cdn.sqhk.co/makafabakuna/vKijJji/wijakegivamerotipede.pdfIn PDF document text
    • https://cdn.sqhk.co/bowazeduz/rheUgfW/dead_cells_review_nintendo_switch.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/xuzakob/fesizarulevanus.pdfIn PDF document text
    • http://xokeraje.rf.gd/avg_tuneup_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9e7d65-baa7-47eb-b2ce-4c0073b9a843/78027293500.pdfIn PDF document text
    • http://xodolipifonabo.epizy.com/cancionero_cristiano_evangelico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef5fa3f4-62ba-493a-b886-f75bfda44e4b/dream_interpretation_islam_marriage_proposal.pdfIn PDF document text
    • http://kofupugixujodin.epizy.com/bharata_simha_reddy_movie_audio_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a0b5da1-5c89-4f00-9312-2e47d038fc01/11739982128.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/freeview_tv_guide_south_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b12c67a-6fd8-4f69-b102-055757c3137b/who_is_the_youngest_greek_god_or_goddess.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/dixie_chopper_customer_service.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/norton_anthology_of_world_literature_vols_d_e__f.pdfIn PDF document text
    • http://xisapedugifado.epizy.com/ti_30x_calculator_fractions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9e4a1c6-f718-4e24-9fcd-4a83fa8ec502/50_ways_to_leave_your_lover_drum_track.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_off000103d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D7 5344 bytes
SHA-256: 092df525f4963ddc4eaa4c285da8af37a4403d477e0256e6deb0d28ef190a65e
font_01_sfnt_off00011611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11611 11368 bytes
SHA-256: 0d73e18bd913a8e6760217379c2befa7d196e9bcbc9982b7d1d3d5341d3b0034

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