Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c56ccbaccca4839…

MALICIOUS

PDF

81.7 KB Created: 2021-03-20 12:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e8b52562d39cd07c316c15513e25d4d9 SHA-1: 8e7d162094285d98e24553b3d2e057cb2be3c598 SHA-256: 7c56ccbaccca48393df982d1320234c1881864495a774fea937bb3813cf3561e
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 0.9997

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://seumenha.ru/award?keyword=paleo+diet+30+day+meal+plan+pdf PDF link annotation
    • https://revijokatise.weebly.com/uploads/1/3/3/9/133999222/895114.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/arithmetic_progression_problems_with_solutions.pdfIn PDF document text
    • http://inostrana.com/pofeben0nmyq.pdfIn PDF document text
    • http://sazodiv.iblogger.org/3294535644.pdfIn PDF document text
    • https://faxilazow.weebly.com/uploads/1/3/4/7/134725206/bowajovozomubamakisa.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/agethdD/adderall_xr_vs_ir_which_is_better.pdfIn PDF document text
    • https://zobigitesi.weebly.com/uploads/1/3/4/6/134691723/6851777.pdfIn PDF document text
    • https://jelonuzekuxenu.weebly.com/uploads/1/3/2/8/132814084/2863275.pdfIn PDF document text
    • http://wexoxunesixu.iblogger.org/aquinas_five_ways_explained.pdfIn PDF document text
    • https://cdn.sqhk.co/votawusebak/bPaJEIM/ant_farm_theme_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/jatobeguji/heOIibn/iphone_notification_ringtones_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/nakizenonetu/fsjhjhz/new_builder_games_2020_january.pdfIn PDF document text
    • http://dajexori.mypressonline.com/what_does_chance_mean.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/nortel_networks_phone_codes_do_not_disturb.pdfIn PDF document text
    • http://manybigs.space/hospital_under_ayushman_bharat_in_varanasi9w8aj.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/9eebda54-95cf-4ea3-9876-253c33139b4a/used_john_deere_garden_tractor_parts.pdfIn PDF document text
    • http://worabomel.epizy.com/73520329511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60cf23f4-7c15-4d70-ac28-95d1b5029fc4/regozabugalara.pdfIn PDF document text
    • http://jemileti.atwebpages.com/528033770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e37c377a-4c26-42ef-84ab-ecf9abe5d1b8/kufig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e42500a3-3ed7-4bd6-98a7-929b7b26fcb3/how_to_set_date_on_g_shock_wr20bar.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF60 5320 bytes
SHA-256: d290445e3704fa19a0d3f8ef8a3ba27f22842d116232ccb1f7c96da8808bf30c
font_01_sfnt_off0001117d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117D 11320 bytes
SHA-256: 38697ab048f7a85a057f2d597606c8cc63be021ef6202a1f267319d5da81a148

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