Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fee77314153317c…

MALICIOUS

PDF

86.2 KB Created: 2021-03-15 15:15:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7ac03d8380290871eb3ce67687c5ac9f SHA-1: 5052891e52056e31fbeeb8b0afd2c6ef90aea1e0 SHA-256: 0fee77314153317c4582cf54f9e0b13fddd2b58f2aeddb77015924ba435e4ccd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9992

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/123?utm_term=wonderland+caravan+palace+song+free PDF link annotation
    • https://cdn.sqhk.co/pulobegefuzi/Aheiiic/keep_away_godsmack_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/ggKKcWR/lawgivers_lite_apk.pdfIn PDF document text
    • http://verifiedbadges-form.com/sovefevozazegokarsvod4.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/h0hUq4g/most_amazing_viral_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/bbiffhe/71984485576.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453747/normal_60029bf66f730.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367635/normal_5fc81a5eb60fd.pdfIn PDF document text
    • https://cdn.sqhk.co/vizoxaxijojo/whhhdKz/caponata_siciliana_ricetta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373527/normal_5fff4e7161297.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413976/normal_5ff6052e9c44f.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/relivuwebofu.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/ieshjhe/2_interesting_facts_about_space_exploration.pdfIn PDF document text
    • http://olivamebel.com/lebara_top_up_uk_loginoos36.pdfIn PDF document text
    • http://muldwych.com/sowejugowujelek6elg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458633/normal_601dc58fd945c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459029/normal_5ffd9db300d5d.pdfIn PDF document text
    • http://dimax.website/designing_with_the_mind_in_mind_downloadwpvbr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472768/normal_5fc7e6594bae5.pdfIn PDF document text
    • https://cdn.sqhk.co/bezorufuv/YqYjh0q/billie_eilish_everything_i_wanted_lyrics_spanish.pdfIn PDF document text
    • http://dronextactical.xyz/which_brand_water_heater_is_bestcy4j8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuverefuregiw.epizy.com/mewafexo.pdfIn PDF document text
    • http://gebibem.epizy.com/8948526143.pdfIn PDF document text
    • http://vesigabeda.epizy.com/pifuzalon.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_off0000f020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF020 5396 bytes
SHA-256: 1762a5fe8c0b04c5316d59427a3b8537105f3df2cee3c766e51c1077fe982f5b
font_01_sfnt_off0001029f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029F 14224 bytes
SHA-256: d3871690e830f2642361a9bc34a5bc442df6c6d2ed345800138c6706eb4518dc
font_02_sfnt_off00012ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA0 18776 bytes
SHA-256: dabf0ccc451caf4864c9b22ca91318a92e8f625b469dd0561edf59b451c7a792

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