Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ddd9e810cfacb6…

MALICIOUS

PDF

82.1 KB Created: 2021-03-18 13:45:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 19d4521a0eb0231b54e1f095b5aab994 SHA-1: a1ecf44837d535a083c0b63c431d15498583bf79 SHA-256: 44ddd9e810cfacb6a47caa9340cbb751b4c73a30b6f76219045839618c9575f8
164 Risk Score

Malware Insights

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

The PDF document contains numerous external links, with one heuristic specifically identifying a 'PDF link farm' suggesting a coordinated effort to direct users to potentially malicious sites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the presence of external URIs and the 'PDF_SEO_LINK_FARM' heuristic indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/award?keyword=pdf+watermark+creator+online+free PDF link annotation
    • https://zilibadokaji.weebly.com/uploads/1/3/2/6/132680781/nigitenop.pdfIn PDF document text
    • https://fuxugikitoze.weebly.com/uploads/1/3/1/0/131070560/3110807.pdfIn PDF document text
    • https://pekeweluxema.weebly.com/uploads/1/3/5/3/135304067/f437f10.pdfIn PDF document text
    • http://leree4.club/how_to_turn_off_silent_mode_on_iphoneauf2n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413370/normal_5fd3dc3568d08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408879/normal_5fdb76515e1c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475719/normal_60164a5fb3513.pdfIn PDF document text
    • http://premial.su/zarufikalujugazorurmmgd0.pdfIn PDF document text
    • https://radugolun.weebly.com/uploads/1/3/4/3/134367443/bonimanajevev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388426/normal_5ff767d3a7b2b.pdfIn PDF document text
    • http://teren.fun/is_braggs_apple_cider_vinegar_good_for_acid_reflux24gwl.pdfIn PDF document text
    • https://kejojotevunujip.weebly.com/uploads/1/3/1/8/131871587/3239092.pdfIn PDF document text
    • http://qrastenmap.online/who_won_the_brown_vs_board_of_education_casee2vgk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_c9831ca8bb3343f4ba5ac9f5d451d753.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jinabom/codycross_answers_group_104_puzzle_3.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/42807573893.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/73530973902.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/lilly_singh_bawse_book.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/dipelizagowavulapi.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/9183427737.pdfIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_bb31ef0e72e9455ab2117878dbfbee81.pdf?index=trueIn PDF document text
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_78246af547ec44298ac6df5e11fc7f97.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kotenu/42136419885.pdfIn PDF document text
    • https://39c10a3a-92c6-412a-a1bb-b8a1fc48fbc4.filesusr.com/ugd/259099_de83ca9d795f43ca8d9f4af1744cbdb9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/aaa_logo_design_free.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/tenvis_camera_will_not_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/taluxinojokisafij.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1F 5144 bytes
SHA-256: ddb323365bf11661274dd23b4efca0090579ad48079857eb53a5f468e8cc05b7
font_01_sfnt_off0000ffa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA6 10908 bytes
SHA-256: 2ad447ceaec5e5384fb2ff82e96c4a2e1fd5bf97505f9a23338cfd71a409ed9c
font_02_sfnt_off00012531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12531 16216 bytes
SHA-256: c4dbace8ac360c5e3b1131c3f8158b520cca7bef0f1dfbebcadc3be3e9aa265d

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