Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0b574853aef26d…

MALICIOUS

PDF

82.7 KB Created: 2021-04-23 03:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a28bf548e7d6a0ef98a3173efe726c97 SHA-1: 618932d888faeedee129ae04c3aab0e121f38a5d SHA-256: 3a0b574853aef26d74ca35c5c741d90ed5a792aada5229e97632f885e43b5087
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of a large number of external links, identified as a 'PDF SEO Link Farm', suggests a primary purpose of directing users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and link farm heuristic strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=miracle+morning+book+series PDF link annotation
    • https://sazunanu.weebly.com/uploads/1/3/4/5/134596286/xigawev-gexevop-tunuweke-nokoge.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/W61ggii/pineapple_pen_song.pdfIn PDF document text
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/573833.pdfIn PDF document text
    • http://bumisemi.iblogger.org/bamegazaxozatajago.pdfIn PDF document text
    • https://gamevuwi.weebly.com/uploads/1/3/4/5/134525912/06d8e.pdfIn PDF document text
    • https://noloxuxema.weebly.com/uploads/1/3/1/4/131453633/jebezozosojexudiw.pdfIn PDF document text
    • http://zusozujowumid.iblogger.org/jakoxedep.pdfIn PDF document text
    • https://cdn.sqhk.co/pulisamog/7rnwfjg/fesona.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c2093f15-f4fb-4bda-9582-db5404103fa6.filesusr.com/ugd/b28561_26d217ef48864285838ce8f6d54d5fcd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/adjacent_complementary_supplementary_and_vertical_angles_worksheets.pdfIn PDF document text
    • http://solilajikabode.rf.gd/fitezuvaragubutatuvexixaz.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/business_analysis_diploma_in_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc29bb46-9e3b-4a47-b0d4-e839ed7301b3/how_powerful_is_homelanders_son.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_bf14cb33b7034dd5b04f046295ffd713.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6400ab39-8498-4ab5-bac3-b2ea8174f2c2/mainstays_fireplace_tv_stand_assembly_instructions.pdfIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_421e357e1f344e88a080ab0f1a3502be.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e6bee92-8f2b-409e-910c-cffefc3909ec/how_to_start_learning_tennis.pdfIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_72206e22600443d2a396cbe36dc299f1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/odia_song_free_website.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06cb6617-7b98-4e87-ac40-9efe0a55c2cc/99449283145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4e7e73-9f62-4aac-b59c-20d771bab653/24090342020.pdfIn PDF document text
    • https://5663e088-3595-439c-971a-5873693bee35.filesusr.com/ugd/e98895_9c981ec25cef4471bef3aa4a8b607478.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/buxosunirubavixomibiga.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/38184899748.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_off000104cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104CC 5328 bytes
SHA-256: 2701cc0dd9162e81d8a76c1b179b0f9954c95bfeb3b5fbf01b38753b26e7810f
font_01_sfnt_off000116df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116DF 11248 bytes
SHA-256: e1345244be77cbf620e28e849b8882c491aece4f37ad4e004cd86be3baf76d5e