Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36fc01b2aa236e1…

MALICIOUS

PDF

91.9 KB Created: 2021-04-19 22:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: bd055806602ddccccc6746796668f31c SHA-1: 69669855e7dee1b8f8533dd1ec0108a8b99b1c46 SHA-256: f36fc01b2aa236e1f9b191c05ccf6cb35e44c553ea01ff0089511f5460ee5dee
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting a link farm or phishing campaign. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document, likely used for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 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.
  • 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://soxebez.ru/strik?utm_term=alimentos+y+bebidas+con+0+calor%25C3%25ADas PDF link annotation
    • https://mojakoxo.weebly.com/uploads/1/3/0/7/130739052/pejisazilojodo_xipenana_jabolafumiruro.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/gfwAYib/43677520634.pdfIn PDF document text
    • http://it50life.pro/guided_access_ipad_forgot_passwordzol3t.pdfIn PDF document text
    • https://cdn.sqhk.co/bozogekeji/hggidjb/93008199943.pdfIn PDF document text
    • https://danegatazi.weebly.com/uploads/1/3/0/7/130776269/tuvuxuxegifawo.pdfIn PDF document text
    • https://novenoberube.weebly.com/uploads/1/3/0/7/130776641/rujar_puvatisotufi.pdfIn PDF document text
    • http://theporte.xyz/2019_camry_se_colorsk3erd.pdfIn PDF document text
    • https://cdn.sqhk.co/tirewaku/hdwEjhq/fall_guys_ultimate_knockout_best_price.pdfIn PDF document text
    • http://parkji5x.xyz/romeo_and_juliet_leonardo_dicaprio_movie_onlinermeme.pdfIn PDF document text
    • http://5coupon.info/where_to_watch_stephen_kings_itvawj3.pdfIn PDF document text
    • https://sezokifor.weebly.com/uploads/1/3/4/5/134596047/varetaw-rakazawebuf-kanerobe-tatamufuliwudiw.pdfIn PDF document text
    • https://cdn.sqhk.co/pifonode/adgiejf/vomelisopinawukarumid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gifiz/57979119069.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/corazon_de_nio_piano_sheet_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/counting_in_words_1_to_10_worksheet.pdfIn PDF document text
    • https://781b76d0-895c-4d4e-90f3-491762fad171.filesusr.com/ugd/894952_78e5e87367d04f69aff69c6bbbd0dbbd.pdf?index=trueIn PDF document text
    • https://a134ef9b-a212-4d8e-a35f-da3d896bbd40.filesusr.com/ugd/dadc92_d8d464e45b52497e972fac530fbb9693.pdf?index=trueIn PDF document text
    • https://2703069b-a6ff-4ff9-983c-db139a8d76ba.filesusr.com/ugd/8b61cf_217ded872e0744b2ba908e5c89080572.pdf?index=trueIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_e21a3faca45840dfb435f19c7f979420.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sigobija/36749526487.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/jmt_trail_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/74561487037.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000119df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DF 5300 bytes
SHA-256: 19f6cae618446890e26380f1571e8d01e164e0d3b202095dbb7ac4162c06192e
font_01_sfnt_off00012bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC6 11676 bytes
SHA-256: 872d72f6cb308bd067f42270ce6b2cdfd9b18c8367ff5f7ab72f01fb88eaec50
font_02_sfnt_off000151f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151F1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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