Malicious PDF — malware analysis report

Static analysis result for SHA-256 44c3c3a797b225fc…

MALICIOUS

PDF

70.0 KB Created: 2021-03-09 04:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: be38969ba5331d9db449a6e6a9f361e3 SHA-1: 013ea5cab2795bda087dcba0cc06fce5eaa16f8f SHA-256: 44c3c3a797b225fc0c3af3da08cd40083f659ff1ee3594c1a5c8f4b001947a7b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://bologen.ru/wix?keyword=minilogue+xd+manuale+italiano PDF link annotation
    • https://fewojejano.weebly.com/uploads/1/3/4/3/134348079/pizos.pdfIn PDF document text
    • https://cdn.sqhk.co/mowasikuso/Pnqglgj/wumidasotezabipuvomanagep.pdfIn PDF document text
    • https://cdn.sqhk.co/nisifowisom/ibK3jcX/sibawivuxefoxubeliwewa.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/US4gjyI/dragon_ball_z_stick_fight_game.pdfIn PDF document text
    • https://vefenebef.weebly.com/uploads/1/3/4/8/134885139/fowebefadunaluz_melobiwaladafa.pdfIn PDF document text
    • https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/9580935.pdfIn PDF document text
    • https://xojakonokixamu.weebly.com/uploads/1/3/1/1/131164577/390615d167ad989.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/g9Hzg9m/youtube_views_counter_not_working.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_a7ad23cb97524bb3ba8bd184ed742c8a.pdf?index=trueIn PDF document text
    • http://jubuzixabes.rf.gd/alexa_speaker_manual.pdfIn PDF document text
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_464bbfa486744236b65ca991331e6ea6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/mandatory_sentencing_guidelines_were_created_to.pdfIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_60b1f5dc7a1a473093a4d25d24594a74.pdf?index=trueIn PDF document text
    • https://3568ea06-17fa-4787-91ae-86b9aa918cbd.filesusr.com/ugd/8ade13_0c75b9e854454c3b9ba407b78648114d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/84729870299.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/85238413072.pdfIn PDF document text
    • http://potolipok.epizy.com/11769643026.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/fisixafulunujitafi.pdfIn PDF document text
    • https://6cf80756-66c2-4d2e-b15d-ff1677cb7115.filesusr.com/ugd/2257e8_b94a3c14d96e41208aab30206f054d3f.pdf?index=trueIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_d7579a778749458b91e7e3426c64ee95.pdf?index=trueIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_c9cbfd32ffeb4b3c89caafb5afa95e57.pdf?index=trueIn PDF document text
    • http://rurudowofalav.rf.gd/what_are_the_principles_of_social_psychology.pdfIn PDF document text
    • https://a6f18165-9bfd-46c9-8f51-0ab50cd0b687.filesusr.com/ugd/265c7a_188ce99b6cfd4dd2940b045b319223ef.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/70202338337.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_off0000d4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D6 4944 bytes
SHA-256: ea47a1b61b36801cb6acf83834d35c9495969240f188944f1a044de78e9a892a
font_01_sfnt_off0000e5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A5 11100 bytes
SHA-256: db06a2d6d8f08073bce632cf95ca40c50013bb593f3c8987cc1c43417f6acce7