Malicious PDF — malware analysis report

Static analysis result for SHA-256 949f936a540f98d7…

MALICIOUS

PDF

85.3 KB Created: 2021-02-21 13:45:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 173589627b9c59fbd6be582363bd6a05 SHA-1: a6806e8b67aebaa7da6453e226a255c259d00c78 SHA-256: 949f936a540f98d7b3e4a88eeaf4136daa603d1cafabf025dfdc6a6ec59c1b39
164 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, including a link farm, and a specific URL that appears to be a lure for downloading an application. The presence of a 'download button' heuristic further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=uc+mini+handler+apk+trickbd PDF link annotation
    • https://rogujodur.weebly.com/uploads/1/3/4/8/134899240/gifejawotilinos.pdfIn PDF document text
    • https://dobetabuzaduguz.weebly.com/uploads/1/3/5/3/135312815/3657171.pdfIn PDF document text
    • https://kopomitesukov.weebly.com/uploads/1/3/1/4/131453216/bafifat-wuxilaf-xupurufap.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/TOjjfCi/wheel_of_fame_apk.pdfIn PDF document text
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/4f035c1.pdfIn PDF document text
    • https://kigumafu.weebly.com/uploads/1/3/4/1/134131380/rojado.pdfIn PDF document text
    • https://kuxodebareku.weebly.com/uploads/1/3/4/0/134042390/f35bb348.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
    • https://s3.amazonaws.com/wutisigila/joxitegixi.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/guided_meditation_for_creativity.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/wogowiperojulamamudegij.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/40964251232.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/wordpress_landing_page_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/allegis_group_benefits_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/frommer_s_guide_to_southern_italy.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/create_mailing_labels_from_excel_spreadsheet_2003.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/3804766506.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/sonic_all_stars_racing_transformed_3ds_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/bhagavathipuram_railway_gate_hd_video_song.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD77 5008 bytes
SHA-256: 9bb6ee3805be4290a66675a4b789ea65506684093660f592877b2b263d693efa
font_01_sfnt_off0000ee37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE37 17056 bytes
SHA-256: 1ed7f2291e8bde572d17ca9a472fb2f285f704912c7b9e0ac414e2f8b760e3fc
font_02_sfnt_off00012279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12279 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449
font_03_sfnt_off000137a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137A8 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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