Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29be1f0843e91e6…

MALICIOUS

PDF

100.0 KB Created: 2021-03-23 15:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2514357e3ef1693e97f7cae8eef45f42 SHA-1: 1b8736c60a57775cd3145f11ccf560b910b4ae09 SHA-256: f29be1f0843e91e6cd765be74907adb757e2c38dc6017856e10f4f6af804f677
156 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 0.9997

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
  • 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.
  • 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://mezovuduw.ru/123?utm_term=admixtures+used+in+concrete+pdf PDF link annotation
    • https://gadabuji.weebly.com/uploads/1/3/4/7/134715747/4abf8851e.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/cable_gland_price_list_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394079/normal_5ffa940d5766e.pdfIn PDF document text
    • http://kofuwokesa.22web.org/balance_the_following_chemical_equations_worksheet_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454171/normal_5fdfd94b560b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459326/normal_5fe22da210000.pdfIn PDF document text
    • http://visunuduxat.mypressonline.com/kofiniwepefedisapigovire.pdfIn PDF document text
    • http://tojumuwuluso.iblogger.org/endgame_4k_digital.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448535/normal_5fcf019818a39.pdfIn PDF document text
    • https://juwibaviwexufeb.weebly.com/uploads/1/3/0/7/130739975/9265270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394071/normal_5fe27d23afc24.pdfIn PDF document text
    • https://zikosale.weebly.com/uploads/1/3/4/0/134013107/e7d785a0.pdfIn PDF document text
    • http://jarokixepoweso.mypressonline.com/english_grammar_for_ielts_8._5.pdfIn PDF document text
    • http://fesufobototezer.mywebcommunity.org/jean_jacques_rousseau_social_contract_essay.pdfIn PDF document text
    • http://lipenav.mypressonline.com/what_instrument_do_we_use_to_measure_weight.pdfIn PDF document text
    • http://vozivovog.scienceontheweb.net/vizio_e320vl_base_screws.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/waganizafoveledak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://foweroboxufafuv.epizy.com/23292394048.pdfIn PDF document text
    • http://wexewowi.rf.gd/lojizodonavofa.pdfIn PDF document text
    • http://zilisidojaze.myartsonline.com/88712004228.pdfIn PDF document text
    • http://noworevapetero.epizy.com/workers_information_sheet_poea_log_in.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/what_is_the_best_waterpik_for_your_teeth.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_off00014977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14977 5116 bytes
SHA-256: 6dfa8f1b9694f17fe6fa82da5abeaa9b5a558aeb1cc1f3acc729af4f5d1b5829
font_01_sfnt_off00015ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AD2 11736 bytes
SHA-256: 299dd410ac950a9ab23b8c3bca521ba30dc0bc6a4a2b4be162d8b7e271f1dc10

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