Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e8886651980bbe…

MALICIOUS

PDF

71.9 KB Created: 2021-01-25 13:50:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d9664f9471b5b82f7bd2552b12b73c31 SHA-1: 79ac63ec3e05f50926b22ef2c443aa611e4249dc SHA-256: c8e8886651980bbecd55f3a95cfc76e10faed3f454bfa9e9c4615544600802ba
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://traffmen.ru/aws?utm_term=facetime+app+for+android+phones'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?utm_term=facetime+app+for+android+phones In PDF document text
    • https://xefafarorul.weebly.com/uploads/1/3/4/6/134698093/zutuzobonipigavojise.pdfIn PDF document text
    • http://noxivivixuza.22web.org/multiplying_and_dividing_algebraic_fractions.pdfIn PDF document text
    • https://kegozogoro.weebly.com/uploads/1/3/4/5/134525602/77718c7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/lelinaregonulaxutiwan.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/algebra_2_volume_1_page_12_answers.pdfIn PDF document text
    • http://tubulufegufixo.rf.gd/fallout_4_character_creation_guide_female.pdfIn PDF document text
    • http://zewixezix.epizy.com/zukiluvixarexuvifezupoju.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/livefozobunorunonofewi.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/sekefosoruzeropagakax.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/kgf_hd_movie_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/uc_browser_pc_softonic.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/mirikavepujij.pdfIn PDF document text
    • http://ximipine.epizy.com/aifmd_annex_iv_reporting_frequency.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/audio_song_free_old.pdfIn PDF document text
    • http://zisekajoreva.epizy.com/xoromowupikuv.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/rajufisategefuwawebudelu.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/free_email_newsletter_template_for_outlook.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/how_to_calculate_anova_in_excel_sheet.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_off0000dac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC2 5316 bytes
SHA-256: 3942308e6df4313549943fbf7a1dfb0d6244661432c281f4bb0042dc23a5769a
font_01_sfnt_off0000ecb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB1 11116 bytes
SHA-256: 4599b8c2e9524caca74bc788fab5c1a4f2d2fb38a6a3bb1fcbb940768a05d7f0

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