Malicious PDF — malware analysis report

Static analysis result for SHA-256 b89815db062fafed…

MALICIOUS

PDF

119.9 KB Created: 2021-03-27 15:22:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 61d69d47c9f26158ef440430651173a6 SHA-1: 1f2c282b9fbd10dc9443e70cb1504dbc290f63e8 SHA-256: b89815db062fafedc2818d73826d2e74d3b6ea0244b04f1b79b2ae3ad00f9ebb
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, with the primary one being a lure for a software download. The PDF structure suggests it is part of a link farm hosted on disposable domains, indicating a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://xezojetit.ru/wix?keyword=ao+oni+rgss-rtp+standard+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409000/normal_6024c11ac0c05.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/jiEhija/hello_kitty_cafe_new_york_city.pdfIn PDF document text
    • https://mulomaninivoxom.weebly.com/uploads/1/3/1/4/131437045/ropazasudu_dupobuzarorebav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380070/normal_601839023f122.pdfIn PDF document text
    • https://salufisudad.weebly.com/uploads/1/3/2/6/132695294/ludabudutetik.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/haiibJy/visemamexuretof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465270/normal_602e4757ab999.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388181/normal_60066901aac2a.pdfIn PDF document text
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/jositetize_damefumanejevef_rififuseru.pdfIn PDF document text
    • https://kibopomirisusi.weebly.com/uploads/1/3/2/7/132741064/b29264d.pdfIn PDF document text
    • http://tamowigaxijatot.66ghz.com/analytical_thinking_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488560/normal_5fe026ff9b955.pdfIn PDF document text
    • http://xebepadizupen.22web.org/convert_kindle_drm_to_online.pdfIn PDF document text
    • http://xurivikarode.iblogger.org/read_allegiant.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/sakaburepagase/hotels_vocabulary.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/guider_in_french.pdfIn PDF document text
    • https://e437b920-fa79-41d5-b67c-0ca059f4e77a.filesusr.com/ugd/d97c10_3d699faee0514eac8f494675a2deb3c4.pdf?index=trueIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_9d3b74aea036494fa4f449efe9f47aa9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fadobirak/can_parents_see_points_on_class_dojo.pdfIn PDF document text
    • http://pekarenov.rf.gd/89649860471.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_off00011ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB5 46384 bytes
SHA-256: 7ffc70a11e425bc8724f5e041781d5d1403fc11e1ec9af5a590506921d7d3a36
font_01_sfnt_off00019646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19646 5240 bytes
SHA-256: 59becba5f4626e4777bab7d65cde801beb5f66ad9e30fc424f2eb5bad5d4dab1
font_02_sfnt_off0001a842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A842 11436 bytes
SHA-256: 3fa054a0ec5915fde296578e12b17b4814dd8da539eb53e5a6f3d80d549807f2

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