Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe126d745a28758…

MALICIOUS

PDF

72.7 KB Created: 2021-04-01 07:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6d85963584eff11fec580eb2bd482b39 SHA-1: 864f382e886e94f8c57e4a26a2629d7821f99682 SHA-256: bbe126d745a287582a6eb330d27223754e1bebaf8f03158c5fc025c984d6fe51
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://nipisod.ru/wix?keyword=target+executive+team+leader+specialty+sales+salary PDF link annotation
    • http://wiinorama.website/58132267226dhqmy.pdfIn PDF document text
    • https://tatemisi.weebly.com/uploads/1/3/4/5/134596356/zorez.pdfIn PDF document text
    • http://rameautbxy.space/dovomisipuzisesadotj7opx.pdfIn PDF document text
    • https://xegazoniwenopuk.weebly.com/uploads/1/3/6/0/136011370/a42dabb7.pdfIn PDF document text
    • http://poradoit2.site/bozunokutipd30us.pdfIn PDF document text
    • https://sewimoranekodov.weebly.com/uploads/1/3/0/9/130969375/863968b77.pdfIn PDF document text
    • http://nout-prodat.site/minimum_industry_safety_training_answerscm0th.pdfIn PDF document text
    • http://proita.fun/modelos_de_control_de_inventarios_ejercicios_resueltosa1qxy.pdfIn PDF document text
    • http://opt05.ru/17185672444ed2xc.pdfIn PDF document text
    • http://topvideo.design/how_to_make_a_grandfather_clock_workaxrll.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/91590564412gylbo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_e37f9f148d984be0a61a51fa79550b01.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/45ffbb50-d7ce-46c6-957d-43b8e9359356/52510664912.pdfIn PDF document text
    • https://f6e2a16f-d004-42cd-8f17-0463e090774c.filesusr.com/ugd/c70c35_8f83e805d4bf4942a09176e844ef35b6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/501f49a8-e9c1-407b-aac3-c094f02eb6a8/graco_pack_n_play_instructions_with_bassinet.pdfIn PDF document text
    • https://8dcf3d85-40eb-4350-b789-ae6ac2c46e24.filesusr.com/ugd/21d17a_0aef84de26d24af19565740d5abad8e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/47480410765.pdfIn PDF document text
    • https://c9254e9e-0e71-498a-8384-ab4c929b52b4.filesusr.com/ugd/0699ff_95827783ae694b568950c6ee317e5a86.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/abde7a59-6268-48b2-8034-37bee2bd4a4d/77918730415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41869a05-24c5-473d-be80-958980effb3a/91231738618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82ec0519-a29c-4326-8c47-af7c881421bb/batubugibixovenodof.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/jingle_bells_karaoke_free.pdfIn PDF document text
    • https://5c09c65f-4728-49e3-9562-8692e696fc4f.filesusr.com/ugd/32acb1_24becb48615a4d13b907ea8b5ada6d53.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tugumeb/call_of_cthulhu_doors_to_darkness_scenarios.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_off0000dce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE7 5572 bytes
SHA-256: 1d25fd0c362161804a635147698ed5d1610cc9d2bfb951bd89f613ff94f6f2d4
font_01_sfnt_off0000efd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD7 10844 bytes
SHA-256: 1a765942cdee37c467bed0e01d5cdaaacfb60ece95ca1c0e73a2562bec789505