Malicious PDF — malware analysis report

Static analysis result for SHA-256 7881166a453b94e6…

MALICIOUS

PDF

83.5 KB Created: 2021-03-11 09:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d0f6a967a916f927a71059235ba027df SHA-1: cd85bd2301c31475a812a828f553709ac3c0a282 SHA-256: 7881166a453b94e6755749a58c1660cf26db236bdee0e20b01a089fb85694036
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=ljmu+harvard+referencing+guide PDF link annotation
    • http://apeech.ru/what_does_consumer_reports_say_is_the_best_refrigeratorg0t3z.pdfIn PDF document text
    • http://baranaydin.org/dell_precision_m6700_dvd_driverdf98v.pdfIn PDF document text
    • http://sitizinudex.getenjoyment.net/sears_appliance_repair_service_call_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/jVLia9m/train_sim_world_csx_heavy_haul_xbox_one.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453560/normal_5fe6e0d3cabbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370089/normal_5fe4271e2a406.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448545/normal_602ee68a38d59.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/how_old_is_rl_stine_now.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/jficJgh/28357426332.pdfIn PDF document text
    • https://cdn.sqhk.co/nivabetaz/ACUhak2/cookie_clicker_hacked_game_play.pdfIn PDF document text
    • http://chatik85939775.fun/erich_fromm_to_have_or_to_be6hkst.pdfIn PDF document text
    • http://dunodipike.sportsontheweb.net/us_army_rangers_weapons_and_equipment.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/xamapebonijos/wagexujupa.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/86383108916.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/cuales_son_los_sintomas_del_vrtigo.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/53637791714.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/zojirushi_rice_cooker_instructions_brown_rice.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/malwarebytes_anti-_malware_for_mac_link.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/xerujefepeda.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE431 5304 bytes
SHA-256: 7d45964ed7a228114d0525cc0af17296f606d343f542c0e3563426c720ac154c
font_01_sfnt_off0000f61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61E 3872 bytes
SHA-256: d4d8d4a2311d6dafa1bb677a739a097e25dfab43536dbd605815f97ea4b3b12a
font_02_sfnt_off00010579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10579 10800 bytes
SHA-256: c801b110c7a6871be806720c5bd9913b7daa7af9cb8c9500e1d3559c6576de73
font_03_sfnt_off00012a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A95 16340 bytes
SHA-256: 7ea6eb240548e41d0b48991e7548f103f655ec50744b37e00fd405b0f561e5a8

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