Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec3d3470dcc58d1…

MALICIOUS

PDF

76.5 KB Created: 2021-03-29 07:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 92b5a371080fed0bf0e30b0eeefe92ac SHA-1: 7174edb6895d56212ba3639676d7cce6fc18a7fd SHA-256: 0ec3d3470dcc58d155e2f27d512b4583ee486a14ba955b64d8fad2ab94e0717b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to dream interpretation, which is a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=what+is+the+meaning+of+teeth+falling+out+in+dreams PDF link annotation
    • https://cdn.sqhk.co/ropobemuma/jdHHNgj/rise_up_lazarus_lyrics_patty_loveless.pdfIn PDF document text
    • https://cdn.sqhk.co/migixurej/idhgiaR/15466072109.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467274/normal_5fcb77ed4f322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426571/normal_604b86cd14bb6.pdfIn PDF document text
    • http://verenica.net/1st_rank_raju_full_movie_mp4rhyqd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451375/normal_603917adb459b.pdfIn PDF document text
    • http://info-pages.ru/59067779731rcal.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/4idiiMV/human_eye_drops_for_hamsters.pdfIn PDF document text
    • http://com-servers.online/galajajivugop189q.pdfIn PDF document text
    • https://cdn.sqhk.co/nadovexum/ijdW4g0/let_her_go_video_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/libazosu/hZ8jeic/82492874674.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/aFjbygd/kapudovizaset.pdfIn PDF document text
    • https://cdn.sqhk.co/zozevuxe/j5jjAhi/chained_to_the_rhythm_audio.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/gfjbiae/xawopevamudibogetaru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb0f88fe-c34d-48ad-bca0-bb3b1c9385b5/python_while_loop_break_condition.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/27645844394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049282be-2728-4448-abe6-526311d80ee4/neato_botvac_d7_connected_price_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/stylesheet_link_tag_rails_5_error.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2afc567e-fa81-4220-bee3-556213b2ee8c/61356916263.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/how_to_start_a_keto_meal_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/57891081262.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_off0000eee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE1 5332 bytes
SHA-256: 05a6d9cd84d0ce511340ea6e06746a4ee219617b6cf861536fe1a25cddfbfa23
font_01_sfnt_off000100e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E7 10556 bytes
SHA-256: deddf9352fffa714ef948768706158bd70108ad0631aefab315bbaeeb3f4ed31

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