Malicious PDF — malware analysis report

Static analysis result for SHA-256 208d583c70eb291d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-17 20:11:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f6b1f5473a6b27b5a5f84d32bbb2dbf9 SHA-1: 8fcf12e18d58616cc378a4b24cacffbed856c3aa SHA-256: 208d583c70eb291dbe1ffe13c883a94cca0e45e76dd93ee27f4726532daf02db
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://midufefew.ru/wix?keyword=the+alien+periodic+table+answers PDF link annotation
    • https://cdn.sqhk.co/menasimax/G4hbjib/money_maker_lyrics_2_chainz_sample.pdfIn PDF document text
    • https://cdn.sqhk.co/gobejilu/gfPgcgh/phototastic_collage_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/hHhjPhg/bass_booster_for_car_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/sarimotel/Jnfgeic/jiwofozit.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/0hghegd/haddonfield_umc_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/rumobotituda/jgghhiW/61512339384.pdfIn PDF document text
    • http://samoe-samaya.ru/setabazidilusozacxwkv.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/gjiKjdq/jujarezavunudapiv.pdfIn PDF document text
    • https://cdn.sqhk.co/rijunawep/ibhdgfR/xitukesesug.pdfIn PDF document text
    • https://cdn.sqhk.co/bunewonu/idyijQP/diners_club_card_benefits.pdfIn PDF document text
    • http://zagogugugetexo.iblogger.org/82021906958.pdfIn PDF document text
    • http://idealicaitalia-official.site/in_search_of_our_mothers_gardens_womanist_prosexcbha.pdfIn PDF document text
    • http://fsbsiod.com/mufoxovejafm1f7g.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/4PdciaR/terifefimepujetateze.pdfIn PDF document text
    • http://bellissimo.online/former_speaker_of_the_house_texaskkwzt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://losoxapo.epizy.com/ballaststoffarme_lebensmittel_liste.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b91b843-99d0-4a7e-93cb-353583d29dd0/mivazigubidiridezed.pdfIn PDF document text
    • http://saxopevatilu.rf.gd/asterix_the_gaul_in_french.pdfIn PDF document text
    • http://zekosowudorajut.epizy.com/wilisipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e441965-91f3-4cdd-8871-9810e8e1f2d8/bonebudef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1535f6ed-578e-4ba7-8b54-204efcf31262/3854529573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e5897ed-0763-4343-9819-b4a807cd63f5/61140035137.pdfIn PDF document text
    • http://magivaxinel.rf.gd/yamaha_receiver_rx-v661_manual.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_off0000f257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF257 5344 bytes
SHA-256: 2645a33179ba83181d93e620167fa59338c9650259dda25f85696d42b2f75dd5
font_01_sfnt_off00010480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10480 10852 bytes
SHA-256: cd520f805fa2ec2c71e314b7e4df83c69ad89dc5fed894fa5df291ea8533b081

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