Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb162a97556ae51…

MALICIOUS

PDF

74.1 KB Created: 2021-05-10 03:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 05cc31634dbe6e13f5d1fb11d249ac50 SHA-1: 12e613c31ff2bf89625144a6f6e2f7d5d09c2f39 SHA-256: 6eb162a97556ae5118fb095c95b14731f6ba8a3e1f9f46627f25b436b2b56cef
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as part of a link farm or redirect to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to a phishing lure related to "Burger king meals south africa". The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/wb?keyword=burger%20king%20meals%20south%20africa In PDF document text
    • http://tefulen.iblogger.org/dowifigawazipixifutiw.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/hcKQJUV/age_of_war_2_hacked_unblocked_apk.pdfIn PDF document text
    • http://ita-talia.fun/olympus_e520_camera_pricenwqdw.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosudav/3rgjQhb/85803831379.pdfIn PDF document text
    • https://cdn.sqhk.co/xalesikozip/eeCgdgh/bold_arabic_font_copy_and_paste.pdfIn PDF document text
    • https://fopokefizig.weebly.com/uploads/1/3/4/5/134525302/nilewokepaze.pdfIn PDF document text
    • http://tryporte.xyz/la_biblia_hablada_en_espaol_latinoablkq.pdfIn PDF document text
    • https://cdn.sqhk.co/gugivusofed/Lghid9p/30297531391.pdfIn PDF document text
    • https://viwoposiruxeduz.weebly.com/uploads/1/3/4/6/134633276/pilijezivorite_dusikifipan_zevap.pdfIn PDF document text
    • https://cdn.sqhk.co/fogunedevare/8jihhib/kobopi.pdfIn PDF document text
    • https://lovokavupas.weebly.com/uploads/1/3/0/7/130776776/3764430.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/83826468051ef8w8.pdfIn PDF document text
    • https://gikowotezura.weebly.com/uploads/1/3/4/4/134493608/felugewonofeb.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/xulepiwa/google_form_spreadsheet_not_updating.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/english_test_with_answer_key.pdfIn PDF document text
    • http://supikatiwo.rf.gd/levamimawefegalavuzirab.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/sixelu.pdfIn PDF document text
    • http://talavapupaniv.rf.gd/wixigagip.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/weather_report_dibrugarh_airport.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/92284669679.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/export_html_to_react.pdfIn PDF document text
    • http://mibofive.epizy.com/11840675898.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/81710036746.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_off0000dfb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB9 5408 bytes
SHA-256: 211a672962e752839b72a67a6b09392bf7b42194bd88bcc23a86a943fbd3a5cb
font_01_sfnt_off0000f200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF200 11784 bytes
SHA-256: 28eac18acf1284fe86323e989ee31aedec75f013dea951cdc621803ef755d257

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