Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f04432e58380b69…

MALICIOUS

PDF

80.3 KB Created: 2021-04-05 09:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 35ce5be27015c8f2f48d391703cef32f SHA-1: 96563e3fe488efdd2372ffad148dd2f2f5af0a8c SHA-256: 9f04432e58380b692ed5993148c8aa253a4abbab09ca78cbbc0b53b9701d5d8c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9961

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 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.
  • 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=ray+dalio+principles+life+and+work PDF link annotation
    • https://jurefuzosapob.weebly.com/uploads/1/3/4/9/134901670/4979367.pdfIn PDF document text
    • https://cdn.sqhk.co/gepaxulunan/4fu3if8/96572794330.pdfIn PDF document text
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/faxozivirixunob-sosedolozemos-dopupir.pdfIn PDF document text
    • https://dazifefizax.weebly.com/uploads/1/3/4/8/134854215/9721949.pdfIn PDF document text
    • https://cdn.sqhk.co/lasetipulos/hfgdCgj/84260184616.pdfIn PDF document text
    • https://murozukuzofapu.weebly.com/uploads/1/3/4/7/134716639/3024377.pdfIn PDF document text
    • https://cdn.sqhk.co/dixobiwi/jffXIji/1987_conquest_tsi_engine.pdfIn PDF document text
    • https://kevofogag.weebly.com/uploads/1/3/5/9/135962027/mekiba-xafavapopuzoj-kozoxigu.pdfIn PDF document text
    • https://cdn.sqhk.co/lemusezilaz/cjajjhg/best_songs_of_all_time_youtube_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/lubigegek/hgegeja/super_soccer_3v3.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/podawakumepewez/vemexoxasevujamuzet.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/26608539130.pdfIn PDF document text
    • http://sugobuven.rf.gd/difference_between_formal_and_informal_report_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43a903a4-6794-4b77-a060-bac4e1a39cc0/walige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74120ef3-8047-4f08-8a9e-9934f07e3b8b/what_is_the_best_light_therapy_device.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26e31664-c9be-4bc1-a744-aa30272349d9/xenupodanoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/gravely_zero_turn_mower_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/53152729976.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/60368707687.pdfIn PDF document text
    • http://wufepuxirar.epizy.com/nespresso_lattissima_plus_review.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/fakotu.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/how_do_i_know_if_baby_has_developmental_delay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0e88958-af21-4cda-aa5f-431873f36cd4/dometic_rv_dual_zone_thermostat_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fba30ca-7d01-48ca-9216-da60a25822ee/hillsboro_school_district_licensed_salary_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/pipinuzurixojosegoragabe.pdfIn PDF document text
    • http://zukigira.rf.gd/kenneth_hagin_net_worth_at_death.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_off0000fabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABE 5412 bytes
SHA-256: 71ba2f1885a13074ac39d8e294cda1b49a7c5234e6f6ac5bd550a9eb5e5716e4
font_01_sfnt_off00010d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5F 11036 bytes
SHA-256: d96e7bf8eeece93e8fa80a56d02034a53eb7f9d6885c741490d3257bb2c48ecd

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