Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf21252f3de9bff…

MALICIOUS

PDF

86.5 KB Created: 2021-04-06 04:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a750217ec42a391669d20202e5f32296 SHA-1: e103d3922e40586a861cbedce5ee8d2fd46c4a19 SHA-256: faf21252f3de9bff044c6e8831956fa5803193ff291266a50c29c571dc591f02
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains text related to 'Burnout Paradise apk free', which is likely a lure to entice users to click on the malicious links.

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://zajinet.ru/123?utm_term=burnout+paradise+apk+free PDF link annotation
    • https://fufukarebalomok.weebly.com/uploads/1/3/4/3/134352968/lururulav_wufexid_luwigudimapokaf.pdfIn PDF document text
    • http://priz24.site/jikutofal7qa.pdfIn PDF document text
    • https://ladetizor.weebly.com/uploads/1/3/4/7/134731735/ff58339ceda.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_604309fb33417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386594/normal_60551a85a92b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392195/normal_600b98619154b.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/hW1OKjh/nail_designs_with_rhinestones_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457563/normal_604f3c8f3780e.pdfIn PDF document text
    • https://kezikiwagoxarud.weebly.com/uploads/1/3/0/7/130739267/9386525.pdfIn PDF document text
    • https://vokavubibobudew.weebly.com/uploads/1/3/5/3/135316357/7312499.pdfIn PDF document text
    • https://rezunodi.weebly.com/uploads/1/3/4/3/134368031/9904602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475730/normal_600fc1f7c7e77.pdfIn PDF document text
    • https://cdn.sqhk.co/jasuxerazifo/DggHnii/english_grammar_classes_free_online.pdfIn PDF document text
    • http://marafonsport.site/whats_the_shortcut_key_for_strikethroughpo1nv.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/teacher_interview_preparation_guide.pdfIn PDF document text
    • http://fobegagefim.epizy.com/64258223068.pdfIn PDF document text
    • http://luvojidepezepag.epizy.com/nuvadore.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/android_9_screenshot_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/goruzugisasixajapujalodar.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/lufelalinajewapu.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/what_kind_of_battery_for_a_minn_kota_trolling_motor.pdfIn PDF document text
    • http://xekuvazam.rf.gd/ronanawuj.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000fb97.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFB97 15408 bytes
SHA-256: 67dfa19bfe1934c86510cdd66c54ff84c56644fd621b50e50894223add7f1f69
font_00_sfnt_off0000ea22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA22 5116 bytes
SHA-256: 6b4c9095d6783e234c30267bd5d67d003f4fd2ec1c1af1b03176549c7ac76acb
font_02_sfnt_off00012630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12630 11136 bytes
SHA-256: d13bb81973238aeacfc229da90a5a6301c4669ed9aee2f6ac06239cb5096869a

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