Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f68f1c3414f6a30…

MALICIOUS

PDF

76.5 KB Created: 2021-04-06 18:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 819684223719811a2740d197131438b1 SHA-1: 1412863b6d76f17e294f057fda38dc5850f0ee30 SHA-256: 2f68f1c3414f6a30b201677539bcb50a1de22135b869f1b97e1673c65f3357aa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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/strik?utm_term=borg+warner+velvet+drive+transmission+leak PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374835/normal_60430a7fc654b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487194/normal_6014953006215.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/36850812938.pdfIn PDF document text
    • http://kalowodopole.mygamesonline.org/visual_basic_ado.net_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/lubigegek/estJBE2/car_horn_sound_mp3_ringtone_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sobupepokor/ie5jeYA/best_photo_editor_app_android_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/1qijQkc/avaya_phone_manager_pro_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fekoguwiwu/h2hgzjb/best_caption_for_fb_pic_in_nepali.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/what_does_loki_helmet_symbolize.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411682/normal_5feebecd60e46.pdfIn PDF document text
    • http://xiwupulo.medianewsonline.com/amplitude_modulation_numerical.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://98771922-91e4-4673-aa0d-7794f4435593.filesusr.com/ugd/b6aaa0_a0398f7b0d9849caac9237241f5e0cda.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/212d304f-f406-40f9-9e4b-314ea938d4c0/88808260420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44083bd9-9eae-486c-855b-82b247c5d863/when_did_total_gym_come_out.pdfIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_f2402018f57f44e19f427ba428ce7e67.pdf?index=trueIn PDF document text
    • https://33da92c3-26de-4f6b-bf12-1693cb6a6e79.filesusr.com/ugd/0307f2_cef06ce7ee774a95b7042db15dec298f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/159f42d0-5fe6-4ffe-b993-e1bdf737b782/dewalt_dw708_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/bexes.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/bytomic_performer_v4_boxing_gloves_review.pdfIn PDF document text
    • https://12c9c681-cafc-4f88-93da-cb6f471fd49a.filesusr.com/ugd/f09a9d_d9c07c122e484376bcb640598c39f85a.pdf?index=trueIn 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE26 5412 bytes
SHA-256: 8e07eb25b49f8361f0cec18c9ca7a55197dc3396764760a07c0b0166b6ef6acc
font_01_sfnt_off0001008e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008E 10540 bytes
SHA-256: 0cfbfad106d9e59d503cc0efc31a4e47dff2c7a8b3fee653191f06174365131c

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