Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73f707e0f917a10…

MALICIOUS

PDF

80.2 KB Created: 2021-03-24 22:23:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e153ee0ce26d26236147c352a93cf164 SHA-1: bfbb0f0c9385d22b9ff37693187fcf371dcde4e1 SHA-256: c73f707e0f917a1026ace04adc0c0f714842f45c94f4b3f97568dbdc1a0a342e
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body and extracted URLs suggest a phishing or scam attempt, directing users to potentially harmful websites disguised as search results. The presence of multiple external URIs and link farm heuristics further supports this, indicating the document is designed to redirect users to various potentially malicious or scam-related sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jacksth.ru/wix?keyword=skam+watch+online+eng+sub PDF link annotation
    • http://jepewadagamer.scienceontheweb.net/zikadaridanazoxut.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/binary_decimal_hexadecimal_octal_conversion_method.pdfIn PDF document text
    • http://fizebiredasibi.mypressonline.com/what_is_leap_sleep_regression.pdfIn PDF document text
    • https://zudobusida.weebly.com/uploads/1/3/5/3/135330479/dewokez.pdfIn PDF document text
    • https://surevasod.weebly.com/uploads/1/3/1/8/131856145/994bf6791.pdfIn PDF document text
    • http://fufirewavit.getenjoyment.net/fawokanebarugorotefo.pdfIn PDF document text
    • http://lnstagram-helping.live/metabolism_reset_diet_christianson7qeku.pdfIn PDF document text
    • https://gumoxeladupeguv.weebly.com/uploads/1/3/4/3/134318886/bevamakifowudogaf.pdfIn PDF document text
    • https://bikepudebap.weebly.com/uploads/1/3/1/4/131405977/5562364.pdfIn PDF document text
    • http://gasurorir.sportsontheweb.net/rojudujevat.pdfIn PDF document text
    • http://table-wait.com/pixolelimusokom8ew0.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/33785777999.pdfIn PDF document text
    • http://feludekinopotas.scienceontheweb.net/2019_jeep_grand_cherokee_factory_service_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_86a4e70b8fe44f479535d16c2f73ac49.pdf?index=trueIn PDF document text
    • http://popofisofol.myartsonline.com/d_d_blank_character_sheet.pdfIn PDF document text
    • https://ef90beaa-bca2-431e-862c-49c19dd94618.filesusr.com/ugd/06497e_f69c33c2c3654cadb71a1533a82df607.pdf?index=trueIn PDF document text
    • http://jelomasulavi.atwebpages.com/amharic_music_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8e6ad22-099b-4529-8aa2-09e084709cd9/govt_of_india_act_1935_divided_the_country_into.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/006a9f71-f0d6-4d55-94ac-f659ebe8c582/88914891508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6f4d931-82d1-45ff-ba25-1f4da1c4dd35/gotoxikapimoparizitibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85fe6b1b-4a25-482a-9218-59c4c5ee085c/subimovesopexorosemodusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5f44e90-8a3c-4bb4-9348-bae92ba365c8/85387785378.pdfIn PDF document text
    • http://xasagode.myartsonline.com/the_vegetarian_epicure_anna_thomas.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ede2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE2 5396 bytes
SHA-256: 12a873d0c38bdd6b945ecab23f1483a957241512d6e014e0442e9ac42eee56a0
font_01_sfnt_off00010024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10024 10824 bytes
SHA-256: 09e3774fe5ffc635816052af8946e7b9540e3ee9c616c41e0637fae0ea7d5d38
font_02_sfnt_off00012536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12536 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3