Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd910d749eede64…

MALICIOUS

PDF

70.8 KB Created: 2021-06-07 22:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 29ebe7a60bcc2052699c1207654cd56f SHA-1: ebd513f5e4ca552350062ee5019a269eea4f4bce SHA-256: 0dd910d749eede6402d4af0992016ea23a98d05b45a295bd8c5823c08eec14f3
186 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 0.9998

Heuristics 6

  • 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.
  • 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://infrive.ru/pbw?utm_term=pltw+poe+2.1.4+answer+key PDF link annotation
    • https://womonejod.weebly.com/uploads/1/3/2/6/132681039/vivunasamowaj.pdfIn PDF document text
    • https://wivirupi.weebly.com/uploads/1/3/4/6/134666213/b26e51f336370e9.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
    • http://pezeliv.pbworks.com/f/43687203163.pdfIn PDF document text
    • http://fevosezew.pbworks.com/f/4655149784.pdfIn PDF document text
    • http://tusoxefum.pbworks.com/f/pekikazukuzenona.pdfIn PDF document text
    • http://zilebunod.pbworks.com/f/92942285563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48df1412-a2d3-4ae6-9ed3-160306d642f7/85636897310.pdfIn PDF document text
    • http://wojipag.pbworks.com/w/file/fetch/144606822/81451648122.pdfIn PDF document text
    • http://gorixose.pbworks.com/w/file/fetch/144730056/53171437960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac409c46-33b2-4f50-8461-534756a0ab30/kenmore_oasis_washer_error_codes_ol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46da48b5-9342-4fc5-b3b6-c1d087c31e5a/21754621048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/492af7de-fc83-4e09-9a8a-92024a681b26/homelite_2700_psi_pressure_washer_review.pdfIn PDF document text
    • http://zeratuwolima.pbworks.com/w/file/fetch/144537069/how_to_get_shopping_basket_analysis_in_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05e0f124-a71c-4f0b-a8b0-c3652f256162/jamadifo.pdfIn PDF document text
    • http://supijexed.pbworks.com/f/documents_required_for_i_130_for_siblings.pdfIn PDF document text
    • http://xetibubib.pbworks.com/f/43030586476.pdfIn PDF document text
    • http://gozuwef.pbworks.com/f/son_of_bigfoot_movie_common_sense_media.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ff4cd8b-9a6c-4022-bc94-10e7dcf06ed4/gorenavesaxupuvitujugadi.pdfIn PDF document text
    • http://fufitiruw.pbworks.com/w/file/fetch/144568848/ea_sports_ufc_3_pc_key.txt_download.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_off0000c794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC794 5116 bytes
SHA-256: db4f226486dde90da4fff65310d8765de95121991370a052d4b07a5b70e2e10e
font_01_sfnt_off0000d91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91A 10900 bytes
SHA-256: c354b8bc231ba56bfd22fbf02abd0eb3aa501659ed82f3f600512c78195a1698
font_02_sfnt_off0000fe4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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