Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1178291bdc27b2e…

MALICIOUS

PDF

93.2 KB Created: 2021-04-06 16:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a99223fdcff076812d4d7ef67d52bb2 SHA-1: 2c499f27bf2a77521fb921f18bf4241da8fcf33c SHA-256: e1178291bdc27b2e5dea595812a4da949e25847fb462599514888e577a0120fa
96 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with the primary one being https://nipisod.ru/award?keyword=angles+in+parallel+lines+worksheet+gcse+pdf, suggesting a lure to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity, potentially leveraging JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/award?keyword=angles+in+parallel+lines+worksheet+gcse+pdf
    • https://nelurorinubix.weebly.com/uploads/1/3/1/3/131384252/gomuwolav.pdf
    • http://liwitesuzemumex.sportsontheweb.net/sorudozejowubipefa.pdf
    • https://cdn.sqhk.co/porosobof/DjijISg/kubalodewewuriluzewuno.pdf
    • https://static.s123-cdn-static.com/uploads/4425009/normal_5ff21e48a802e.pdf
    • https://tuvukorop.weebly.com/uploads/1/3/1/8/131857527/doxavadatelunotetu.pdf
    • https://nuvipepive.weebly.com/uploads/1/3/1/4/131409498/2782027.pdf
    • http://xemepuvaxeliv.iblogger.org/jejiwema.pdf
    • https://cdn-cms.f-static.net/uploads/4455376/normal_5fd914f438f17.pdf
    • https://raxuzorozejataw.weebly.com/uploads/1/3/4/0/134042373/vejov-ladegab.pdf
    • http://sawemawe.mywebcommunity.org/64626333733.pdf
    • https://cdn.sqhk.co/fowurona/egzkHhc/jiffy_lube_live.pdf
    • http://menuralu.22web.org/mantra_biometric_device_software_free.pdf
    • https://static.s123-cdn-static.com/uploads/4387807/normal_5ffd52494862c.pdf
    • http://alphabitx.com/the_organic_chem_lab_survival_manual_10th_editionxqtz8.pdf
    • http://cashtanks.fun/27125627969et76h.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lodusebivepakef.epizy.com/dexakajerigavesifavisilu.pdf
    • http://pedamodaw.onlinewebshop.net/vuletukifizuveluv.pdf
    • http://sikegopivizegaw.epizy.com/garmin_approach_s60_user_guide.pdf
    • http://najevepa.epizy.com/24425959373.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001152b.bin
eb7658e94b3be48968b605ded3915c39089de10dd6cd40087150d24acf4bd80b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1152B 5564 bytes
font_01_sfnt_off0001282f.bin
8139df96bb2b9398cfa68b726ade27cbdb2877c302a0e4346693b72193b242c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1282F 12336 bytes
font_02_sfnt_off00015211.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
pdf-font-stream PDF embedded font (sfnt) at offset 0x15211 16204 bytes