Malicious PDF — malware analysis report

Static analysis result for SHA-256 8123e7996896ff44…

MALICIOUS

PDF

79.8 KB Created: 2021-03-02 01:45:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: eb250e2a6a13604a8d27ec23dbb8acba SHA-1: 194b30fbbc1f27c98f1c0c087607df5825c48588 SHA-256: 8123e7996896ff44d33314acc462779498c948a175259cb283ffb5881d02662e
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to 'Jumper cables price checkers'. No scripts were extracted, but the presence of many links points to a strategy of directing users to external, potentially malicious, sites.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=jumper+cables+price+checkers In PDF document text
    • http://veruvipavopa.getenjoyment.net/romeo_and_juliet_movie_2013_full_movie.pdfIn PDF document text
    • http://guvorib.22web.org/dixezorujezebawunekizes.pdfIn PDF document text
    • http://skidki-day.shop/63696839174n2tw9.pdfIn PDF document text
    • http://mikrotikwizard.com/3xyxj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427538/normal_600c135ff4236.pdfIn PDF document text
    • http://nasporte1.fun/sexejulezilusapev457tc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443824/normal_603233c01d68d.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/35995861344.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471091/normal_5ff4ff5e48715.pdfIn PDF document text
    • http://jumovuv.22web.org/baccalaurat_en_informatique_et_gnie_logiciel_7316.pdfIn PDF document text
    • http://fishland.store/tutobidodaboputijixiling69.pdfIn PDF document text
    • http://yatvoyya.fun/axis_and_allies_europe_1940_national_objectivesoxl1w.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
    • http://baletax.onlinewebshop.net/hp_laserjet_p1006_download.pdfIn PDF document text
    • http://sabozovitebem.rf.gd/dmv_ny_cdl_test_online.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/22._how_many_chickens_would_it_take_to_kill_an_elephant.pdfIn PDF document text
    • http://suwuriru.onlinewebshop.net/kenmore_elite_dehumidifier_parts.pdfIn PDF document text
    • http://ziwebizivag.epizy.com/pemubedajevoxizezuriwi.pdfIn PDF document text
    • http://tukuponuvul.epizy.com/castlevania_symphony_of_the_night_mist_form.pdfIn PDF document text
    • http://donovebar.rf.gd/alone_girl_pics_free.pdfIn PDF document text
    • http://mavipob.epizy.com/65916013.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 4952 bytes
SHA-256: 45a574af6af8cd38bb46800a1bd6a371c275226d982f540ba5b9b5096a056431
font_01_sfnt_off0000fa7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7E 12704 bytes
SHA-256: 3083812e4e66367e67dca6c1fbe4de33f5fd4e8d8b8d40f74d4f355ff281f41d
font_02_sfnt_off00012359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12359 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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