Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8528dd0fe6034ed…

MALICIOUS

PDF

80.4 KB Created: 2021-03-24 11:55:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b2f26fa8ed7d35274f05788c18391bf1 SHA-1: 7f3509d326a32ea2e85008a17bf3edc0ef2ebe70 SHA-256: f8528dd0fe6034ed3e940752469a5ac6df8dd40a9622782d5f5612b2e696ac67
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a large number of external links, indicating a potential link farm or phishing lure. The embedded URLs, such as 'https://zajinet.ru/123?utm_term=bodega+underground+broadsheet' and 'http://nomolizuxabid.22web.org/xoselebaxolivovifuraf.pdf', are suspicious and likely lead to malicious content or further phishing attempts. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.

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 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://zajinet.ru/123?utm_term=bodega+underground+broadsheet PDF link annotation
    • http://nomolizuxabid.22web.org/xoselebaxolivovifuraf.pdfIn PDF document text
    • http://begiguvok.iblogger.org/floodgate_alistair_maclean.pdfIn PDF document text
    • http://raxaterov.iblogger.org/the_stand_cast_stephen_king.pdfIn PDF document text
    • http://nasodojazawito.iblogger.org/sesufasadelas.pdfIn PDF document text
    • http://xuxuvojetuzutej.iblogger.org/audio_beats_pro_apk.pdfIn PDF document text
    • http://santecmb-sarl.com/772263888411iwgk.pdfIn PDF document text
    • http://skout.tech/12458235188tky9j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/husqvarna_7021p_carburetor.pdfIn PDF document text
    • https://7605d98d-8b17-4a41-9383-f5c8d5af9bcc.filesusr.com/ugd/2bed4c_d769ff890c634e52b6f84a3dd8405f90.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kewakuko/adanga_maru_tamil_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/adobe_air_android_9.pdfIn PDF document text
    • https://63c5840e-267c-49ed-94d3-fc9f9d8b9c0b.filesusr.com/ugd/8c5bc8_192d3925724f44ac9d4aa3a6a2bf58ab.pdf?index=trueIn PDF document text
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_033e51f490cb4ebd984eed47b272cfaa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/15874036423.pdfIn PDF document text
    • https://a9f3490c-def6-45ea-9957-aefa341d54bd.filesusr.com/ugd/84b587_4f640ce1ffb74a1ead962d8b9ad73ee0.pdf?index=trueIn PDF document text
    • http://dusalotiwuje.rf.gd/ccnp_security_firewall.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/import_icloud_contacts_to_android_phone.pdfIn PDF document text
    • https://55f5e71c-5f54-469f-9449-301c43944234.filesusr.com/ugd/bbdb65_d60aa701de2a4b4aa2c074a4d73b64c8.pdf?index=trueIn PDF document text
    • http://pupudewasoxo.epizy.com/iptv_smarters_pro_apk_latest.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_off0000e627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE627 5244 bytes
SHA-256: 6787f17283c06996e17ebc8251045fd78d99b5a240fd5ed9c7b6a1000ae5837d
font_01_sfnt_off0000f7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F4 11264 bytes
SHA-256: f7d0b60555e4e4bafc401f0ee88f3c99168d9098d9e1a6b8b5ade3a89b97203d
font_02_sfnt_off00011e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E86 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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