Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aaa7efabf6d411e…

MALICIOUS

PDF

136.3 KB Created: 2021-03-17 01:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: df7395d95424e1f8ec34b6caf9fcf73b SHA-1: 4094c63d3ac737c014b5048a0c8a2cf060da679d SHA-256: 7aaa7efabf6d411ed77a96978026dae1df85f9046ba96174340dc2f4c96eafa6
134 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous external URIs, including one pointing to 'maypoin.ru', suggesting it is part of a link farm designed to redirect users to malicious content. The document body, though partially corrupted, contains keywords related to 'Telugu new movies app for android' and urgency lures, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/123?utm_term=telugu+new+movies++app+for+android PDF link annotation
    • http://jogajep.medianewsonline.com/58046082481.pdfIn PDF document text
    • http://mitatizizuje.mypressonline.com/incrementalism_in_policy_making.pdfIn PDF document text
    • http://rebezun.mygamesonline.org/rheem_tankless_gas_water_heater_reset_button.pdfIn PDF document text
    • https://kobadibik.weebly.com/uploads/1/3/4/8/134861151/xabomudiwavagiw_wuzufiwiboxufe_pujuvaduwajepe.pdfIn PDF document text
    • http://miribut.mywebcommunity.org/logitech_z_5500_price_in_pakistan.pdfIn PDF document text
    • http://tesupelaj.sportsontheweb.net/how_to_work_out_volume_of_a_cylinder_in_ml.pdfIn PDF document text
    • https://luvalebasewe.weebly.com/uploads/1/3/5/3/135326782/5c01f44d5a67c.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/torogowi.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/48916726196.pdfIn PDF document text
    • http://fesunasisodenod.getenjoyment.net/riworasa.pdfIn PDF document text
    • http://boribonabone.mypressonline.com/17535856977.pdfIn PDF document text
    • https://nugilura.weebly.com/uploads/1/3/5/3/135317706/2649216.pdfIn PDF document text
    • http://nituzovido.getenjoyment.net/16325664201.pdfIn PDF document text
    • https://xeneniwavufew.weebly.com/uploads/1/3/2/8/132814439/vepate.pdfIn PDF document text
    • http://zereteleriw.getenjoyment.net/vuvadevoje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zegetafirotazaz.atwebpages.com/probability_formula_for_3_independent_events.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/yo_amo_tanto_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/90435850965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32c530d7-6cb5-4e8f-8e49-4aa1cd0451e6/concepto_de_investigacion_cualitativa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0fc0cf4-30e0-4c27-b5c9-a10d3c202772/vsphere_client_6.0_portable.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/mamiya_rb67_pro_s_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfc94a74-1af1-40e1-ba91-1632d5aa3aea/what_are_the_main_features_of_development.pdfIn PDF document text
    • http://kipazafar.atwebpages.com/mathematics_for_economists_pemberton_rau.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/92543413260.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/police_sergeant_interview_questions_and_answers.pdfIn PDF document text
    • http://zodofujeki.atwebpages.com/medical_billing_business_plan.pdfIn PDF document text
    • http://letutemoxeluz.onlinewebshop.net/39799447254.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_off0001da16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA16 5460 bytes
SHA-256: a19f40789fe2e75c4fecc1e06e6724c75ba94911c4d99a3dd9780398dbd3905f
font_01_sfnt_off0001ecac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ECAC 11520 bytes
SHA-256: 5792e5a63d60171a1e2b54afe6f54f2fc3e13646cebbc4411d5c66b6ef00e639

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