Malicious PDF — malware analysis report

Static analysis result for SHA-256 56080f1616e011f6…

MALICIOUS

PDF

86.7 KB Created: 2021-03-06 12:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76aae2b52512110ce11cd53725c9ce48 SHA-1: 50357794423dd800e62e4857f2da0e1abe18dcc6 SHA-256: 56080f1616e011f65d2a4e95b33ca5528eb91e1ac6ee79e5c4af8216f7e4a134
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam or phishing. The 'ML_NYX_PDF_MALICIOUS' heuristic and ClamAV detection strongly indicate malicious intent. The document body, though truncated, suggests a lure related to repair costs, aligning with phishing or scam attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/aws?utm_term=how+much+does+macbook+air+screen+repair+cost
    • http://nawogevimogagu.22web.org/gutasosivogeved.pdf
    • http://rufafepikawaj.22web.org/43801600183.pdf
    • http://custits.space/unlock_region_code_sony_bdp_s1500wllam.pdf
    • http://opssmall.space/academic_paper_template_latex5ez40.pdf
    • http://jobware.pro/99_names_of_allah_with_urdu_meaning_download36680.pdf
    • http://1pokypki.website/rosemount_conductivity_sensor_manualyo04k.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/retobifulipo/guidelines_for_hypertension_treatment_2018.pdf
    • https://s3.amazonaws.com/gimufesajo/66803941790.pdf
    • https://s3.amazonaws.com/tomamujuf/how_s_work_going_answer.pdf
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_ee66915d36644ffbbe9076ddb3c1020c.pdf?index=true
    • https://s3.amazonaws.com/pazatuv/how_to_report_wilcoxon-_mann-_whitney_test.pdf
    • http://dereduvate.epizy.com/tojuv.pdf
    • http://timubapuzaza.rf.gd/how_many_liters_of_oxygen_is_50.pdf
    • https://s3.amazonaws.com/fatisake/vekkali_amman_hd_video_songs_free.pdf
    • http://lelirovosas.epizy.com/business_english_books.pdf
    • http://xaramoturowuf.rf.gd/merit_english_to_amharic_dictionary.pdf
    • https://s3.amazonaws.com/voxipanovigepiv/xidogabopetagizalifi.pdf
    • https://627f215e-41ba-4aa4-9906-5f9f9d117739.filesusr.com/ugd/8ab72e_8761b962e0c54bf0afa3948f04aff48d.pdf?index=true
    • https://580b68e3-2104-4118-ae5b-4f285de1c062.filesusr.com/ugd/dad7b5_37ba57b1a46b44ff988e0958c0b4510f.pdf?index=true
    • http://migumirokive.epizy.com/how_to_reset_samsung_tablet_without_password.pdf
    • https://s3.amazonaws.com/fajixe/badri_telugu_movie_video_songs.pdf
    • http://jewuvebasabam.rf.gd/fts._net_answer_key_2019.pdf
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_4a9b611e388e4f10970b3c836a615503.pdf?index=true
    • http://kafudunafow.epizy.com/naxuvokonibijagibakolu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104d4.bin
2b2dcb59f476cfe79f8f45809d05a44da555f2fda4ee847deb383b05eb7a8ffc
pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 5420 bytes
font_01_sfnt_off0001171c.bin
c1083b420f0500f3cb1f3924e368c960176dfab382a1d46d28cee0daa1713a2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1171C 11652 bytes
font_02_sfnt_off00013ec8.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC8 4324 bytes