Malicious PDF — malware analysis report

Static analysis result for SHA-256 f082782afe85edf8…

MALICIOUS

PDF

84.2 KB Created: 2021-03-25 14:01:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 594da389ca8ae0fa82476b78875041a4 SHA-1: 72cb9ed90f70cd0443efee1bc4d4f2d81a788bff SHA-256: f082782afe85edf834751b11b1ec512a8c98697ed5e5a46e9ca20ab50fcb24a3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9996

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://pelibifir.ru/strik?utm_term=venn+diagram+maker+for+sets PDF link annotation
    • https://wuvenenuw.weebly.com/uploads/1/3/1/3/131383928/batatajafut_joxaz_xinejowa_pelaralumomidu.pdfIn PDF document text
    • https://kotirilu.weebly.com/uploads/1/3/4/3/134332744/8116268.pdfIn PDF document text
    • https://cdn.sqhk.co/noxobabidof/cjfU7he/ladisaxuxiwozuwi.pdfIn PDF document text
    • https://cdn.sqhk.co/feruwapusux/QgfdNX8/vertebrate_zoology_book.pdfIn PDF document text
    • https://nagiwudulowep.weebly.com/uploads/1/3/0/7/130775657/gekupe.pdfIn PDF document text
    • https://takewinedol.weebly.com/uploads/1/3/4/7/134768260/pebixizugilof.pdfIn PDF document text
    • https://cdn.sqhk.co/movozuba/Qictjie/latisoxoz.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/8e1e06ff-408a-4945-832c-64ef02fd6f58/4559740967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/150d29bd-44ae-492f-8f1d-0113920eaba6/lekojatovigedisumo.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/pazeteneja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c93e7ef7-dc6a-4f05-9187-2e9b6b783f66/ti_89_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/misapasaxukovaxifuz.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/dedifurerugikev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bd8e870-a2e9-4a43-9bc5-7f02060c79d5/what_is_a_valid_argument_in_critical_thinking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b86ec2f-0f97-48d3-82c5-c467e4bc1ddf/kupowiwimosakaros.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/calmato_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cd6b638-6e2b-4c12-a952-e1993734ab49/the_hobbit_unexpected_journey_full_movie_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd32e3d0-8937-4035-96f6-ca5495bbe695/wikofetifenezejone.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/nixunuberedawexole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05a9b17e-2726-4791-b78a-e0e0e77a4d32/how_to_defend_in_street_fighter_4_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e362a2a5-141d-4925-bf9a-e522a7e06929/76007555430.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82B 5224 bytes
SHA-256: 4b6291d357e05b241fbc314e4d05e43d9535ea4299c23b86408c53e183b55ec8
font_01_sfnt_off000109ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EA 10740 bytes
SHA-256: b36e1ff08f7339989187103798094d2d0604b792674c08f574aec33bbc250d75
font_02_sfnt_off00012eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB0 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

Open this report in the interactive analyzer, or submit your own file for analysis.