Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae220d044abebadc…

MALICIOUS

PDF

84.7 KB Created: 2021-02-27 10:29:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d72cbf8f3ef445e59812363ab2d48184 SHA-1: 2ca5b4c85dbf2518b1f12b3fa4b5e144c4852947 SHA-256: ae220d044abebadcc01cee2f9989b739b5375c3fee7b19c9eef20afda69dd1e6
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to PDF files, indicating a link farm strategy. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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://gimoguvi.ru/award?keyword=moon+river+chords+eric+clapton PDF link annotation
    • http://forajadafogaxuv.medianewsonline.com/kindle_3_change_battery.pdfIn PDF document text
    • https://samirimirusa.weebly.com/uploads/1/3/0/8/130814124/sonilidijimebif.pdfIn PDF document text
    • https://zapamapat.weebly.com/uploads/1/3/0/7/130775391/bapitadufukid.pdfIn PDF document text
    • http://parirapopuj.22web.org/synopsys_vcs_manual.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/ralph_waldo_emerson_death_poems.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
    • https://s3.amazonaws.com/kefodek/all_new_bollywood_songs_zip_file.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/proform_cardio_hiit_trainer_costco.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/cerrar_sesion_netflix_android.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/apna_time_aayega_ringtone_bestwap.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/pexexusep.pdfIn PDF document text
    • http://taxisariwoboduz.epizy.com/picsart_app_new_version_2018.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/what_are_the_two_biggest_rivers_in_new_mexico.pdfIn PDF document text
    • http://xobiluwova.epizy.com/56881242565.pdfIn PDF document text
    • http://ritarajekaxitev.rf.gd/30099025015.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/aa_mirror_apk_plus.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/22267055209.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/broilers_farming.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/power_book_2_ghost_season_2_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/cambiar_teclado_espaol_android.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA84 3312 bytes
SHA-256: ac66ddecb1889e99694234647e4a1e19b6174440e696c9ee44c6cb9711419273
font_01_sfnt_off0000e665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE665 5012 bytes
SHA-256: 462b6e9cf515b60cd1b759c713f6db7dc8365b8d1a9667519abc98db3c8de55f
font_02_sfnt_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 11636 bytes
SHA-256: 367dcd8eac0dfa56797bb8bc6a34d3f5ed66e002f5b6082a53b338540c6d4b69
font_03_sfnt_off00011eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB0 16580 bytes
SHA-256: 3913634ec95daa34ea55d31fc213633e92460b0d84646d706317e58237d62a18
font_04_sfnt_off0001352d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1352D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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