Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e7572636075eb7…

MALICIOUS

PDF

78.9 KB Created: 2021-01-19 03:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: fe3f8ca219e74a1c75f96b3298af9a9a SHA-1: 9ccd6bc0c5f7ffeec022b545f24b1c31dde8646e SHA-256: e0e7572636075eb7c037ecc6f04fd5d20e276e03f557c6e415b0dd00cfb62244
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting domains, and a heuristic identified it as a link farm designed to redirect users. The document body, though heavily obfuscated, contains text related to "Guess the emoji answers" and mentions wkhtmltopdf, suggesting a lure to external content.

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
  • 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://trafficel.ru/123?utm_term=guess+the+emoji+answers+level+34 PDF link annotation
    • https://cdn.sqhk.co/lewulula/jOidhiY/73789668088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_5fdc1dd222c03.pdfIn PDF document text
    • https://cdn.sqhk.co/vogidasobe/e8iadhb/boxing_star_mod_apk_gold.pdfIn PDF document text
    • https://cdn.sqhk.co/govizanorev/chjjjDy/70794778629.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/kkQjjgg/crusaders_of_light_classes_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402252/normal_5fb476725cd2c.pdfIn PDF document text
    • https://cdn.sqhk.co/ledusefugize/heb1Iho/zillow_castaway_cove_vero_beach_fl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387702/normal_5ff2c69fc439d.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/XigEfih/vizefikalosidozonika.pdfIn PDF document text
    • http://kulokozataxat.22web.org/86842572274.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
    • http://niribulikebi.rf.gd/11975340755.pdfIn PDF document text
    • http://bigofufujenu.epizy.com/house_cleaning_schedule_excel_template.pdfIn PDF document text
    • http://batogegimuwew.rf.gd/buderus_termostat_rc35_manual.pdfIn PDF document text
    • http://faxanudof.epizy.com/gopro_hero_3_camera_manual.pdfIn PDF document text
    • http://voxinuxo.epizy.com/rstudio_1._1._463.pdfIn PDF document text
    • http://fepoxojosatomu.epizy.com/apple_pages_table_of_contents_template.pdfIn PDF document text
    • http://gewumene.epizy.com/48265573262.pdfIn PDF document text
    • http://xujalupa.epizy.com/free_able_resume_templates_for_wordpad.pdfIn PDF document text
    • http://wepirizifomonij.epizy.com/88902072024.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 5320 bytes
SHA-256: 456b7be60d46cc15bed2bdc1c894f3476b8b8b9f927836c15fc570b52bbb5b08
font_01_sfnt_off0000fd41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD41 10184 bytes
SHA-256: 805b67ffe810de5c9b58c1507d803bd5946e72fad2ceb8e2651768c4d3b4cf8c
font_02_sfnt_off00012032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12032 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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