Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c82b71a26fd001…

MALICIOUS

PDF

75.1 KB Created: 2021-02-26 02:18:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cbb0b8be41c2ffedbe6a6a3bb474a26f SHA-1: 32f528152929f03b882118a9b6a31914777c261b SHA-256: f9c82b71a26fd001e6e1628aeaf87e1da1bd6e5dd409bfe84770e97aa54c7479
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=how+to+replace+invisible+fence+battery In PDF document text
    • https://cdn.sqhk.co/siboxowimu/AAjhsEZ/global_warming_solutions_list.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/iePhfyj/mcintosh_speakers_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/kitobanifamo/Kczgdhd/kepifav.pdfIn PDF document text
    • http://pikogoxo.iblogger.org/jonedajubabonis.pdfIn PDF document text
    • https://cdn.sqhk.co/fematixub/geigVgh/vibekazawidopanikiwolopo.pdfIn PDF document text
    • https://cdn.sqhk.co/gokarunedod/ajbieDF/45988689613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_602a87871ad11.pdfIn PDF document text
    • https://cdn.sqhk.co/tumitibira/e5idghm/brain_training_games_free_play.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/wizomoravazub/vcloud_director_9._7_administrator_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/89281851279.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/bushnell_impulse_trail_camera_manual.pdfIn PDF document text
    • http://bedekopezedegej.rf.gd/rewivisulunanike.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/ann_arbor_michigan_weather_report.pdfIn PDF document text
    • http://xonukekavufimil.epizy.com/verizon_wireless_lg_android_phones.pdfIn PDF document text
    • http://virefixifefuke.epizy.com/94793274766.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_off0000e813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE813 5364 bytes
SHA-256: cddfae44b377af351d63cd648ba3f7b2a696d1c065d60907f48494428a552c13
font_01_sfnt_off0000fa73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA73 10896 bytes
SHA-256: f15f28e675daf053a6f1118f3cf77801f7e10a019cac5311f307210d71e4425e