Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b4cbb931a48ceb…

MALICIOUS

PDF

75.8 KB Created: 2021-03-12 01:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 572420d288a4eae651d9c5d5815eff82 SHA-1: 2344e32e54d843c707df8165df5dd0f1057058c8 SHA-256: a9b4cbb931a48cebd459ab1907b26a1b6de884c96e85eaedbdc4041182b268f8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://mezovuduw.ru/wix?keyword=automatic+to+manual+transmission+conversion+kit+camaro PDF link annotation
    • http://vidclips.design/counter_strike_1.6_indir_botlu_trke7hwe8.pdfIn PDF document text
    • http://whowill.ru/7th_grade_sentence_examplesfsyqx.pdfIn PDF document text
    • http://uscreditreport2021.info/joramapadefokxp4s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403534/normal_60049592b9786.pdfIn PDF document text
    • http://natikolom.site/concave_lens_ray_diagram_practice_worksheet5gqva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489241/normal_5ff497a06abc0.pdfIn PDF document text
    • http://policyhelpcenter.com/annie_script_freefj55a.pdfIn PDF document text
    • http://fashion-deals.xyz/9683112805581ilb.pdfIn PDF document text
    • http://tokio-2020.fun/xarogoped1l00s.pdfIn PDF document text
    • http://edevletorg.com/kirewovyf9pr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4b4b92a8-4ac5-4030-97d5-af0917f8c077.filesusr.com/ugd/0251f0_d9e7459aea4844f298eb5d52a79a2c28.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/godewumazek/affidavit_of_support_form_i-_864_online.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/napadusafegog.pdfIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_732104dcfb6b41de98effd241c304c12.pdf?index=trueIn PDF document text
    • http://wigogejuj.epizy.com/realistic_pencil_drawings_step_by_step.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/12181944859.pdfIn PDF document text
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_1b22b7870bed45b28c22240ecc5ba429.pdf?index=trueIn PDF document text
    • http://wofukisunoxo.epizy.com/mapamundi_grande_con_nombres.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/bloodshed_dev_c_software_free.pdfIn PDF document text
    • http://bujoraz.rf.gd/bosniak_classification.pdfIn PDF document text
    • http://bonagofej.epizy.com/kumevulimoluwozoliroputur.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD7 5060 bytes
SHA-256: 46f95dc71cbeead18f2dec9ab21e4fbeeb94e52950420d71b56a848b764bf6d3
font_01_sfnt_off0000fdf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF4 10428 bytes
SHA-256: eaa9c68d448399897842b3bda72885b1e24c58a53d3e06e7f67b97a2d927e337

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