Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d8bdfd2225f7d7…

MALICIOUS

PDF

64.2 KB Created: 2021-02-21 10:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dc8f3eddc8f4796b34e343d24b53948e SHA-1: 3a13bffd1a986e77cfb8e6d0407737a928e087cd SHA-256: c6d8bdfd2225f7d7bb549631e7f468dfe584fc904ee154c8387ae04d18a04bfa
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://druttle.ru/wix?keyword=panic+at+the+disco+ringtones PDF link annotation
    • https://muwegegedagus.weebly.com/uploads/1/3/0/7/130738526/jofetede_woxiweritevewik_wezilujuguxeke_xovalumozeruw.pdfIn PDF document text
    • https://febelozo.weebly.com/uploads/1/3/4/5/134599394/c7c9f888.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/SegcJVP/daily_class_schedule_template.pdfIn PDF document text
    • http://orbitan.fun/i_dont_care_meme_templaterbhlm.pdfIn PDF document text
    • https://numevajuga.weebly.com/uploads/1/3/0/9/130969633/ceb1e00b2037591.pdfIn PDF document text
    • https://cdn.sqhk.co/lulaxujik/fPrgexL/lausanne_diamond_league_2020_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_6010cafa2fe72.pdfIn PDF document text
    • https://cdn.sqhk.co/lodikorep/gjE4gjf/just_smash_it_coupon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446500/normal_602d2e717a273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_60265540bedff.pdfIn PDF document text
    • https://nodopemewave.weebly.com/uploads/1/3/2/6/132682748/binuda.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/yRxifxe/minecraft_classic_texture_pack_1._16._1.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/gjagfod/sdr_group_inc.pdfIn PDF document text
    • https://cdn.sqhk.co/furigelo/NgefMhd/pevalijarusiwevok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_602ad3cfa800a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488349/normal_601952a3c7499.pdfIn PDF document text
    • https://cdn.sqhk.co/fulaxanew/Ihba5YA/japevajidefozomom.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/gurowozenupifi/33471087042.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/44067441699.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/free_vpn_apk_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/amino_acids_list_and_structure.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_off0000be73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE73 5168 bytes
SHA-256: 1d812da99b9e41dbf6322bee9225ffef1155458beb451d8af9aa32df7cdbce31
font_01_sfnt_off0000cffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFD 10492 bytes
SHA-256: cc21bfcfd2c377cfce8457101652b9a2f94920feee18213a37d1a6680d0349e9

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