Malicious PDF — malware analysis report

Static analysis result for SHA-256 78673056df71d5ed…

MALICIOUS

PDF

77.2 KB Created: 2021-03-07 11:10:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d42d7067bbfca0b6b932e0ff9cfd11fe SHA-1: 378547b60dd43034f0625fd1239fda615423bb14 SHA-256: 78673056df71d5ed029b0190b3199673b6f5f5886ac4b43a53c8d19c3b099419
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-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://xajibur.ru/aws?utm_term=maserati+granturismo+mc+sportline+0-60 PDF link annotation
    • https://jatupixi.weebly.com/uploads/1/3/1/3/131398141/e505eba7bc5b.pdfIn PDF document text
    • http://xitodefigatefuj.medianewsonline.com/formula_del_volumen_de_un_prisma_de_base_triangular.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401985/normal_6000b934e9197.pdfIn PDF document text
    • http://xuxijosut.sportsontheweb.net/how_to_thread_singer_201-2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376088/normal_6000bd5cb871c.pdfIn PDF document text
    • http://stankoff.org/jaxunuxuwenebmlfih.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_5fd0f00046fca.pdfIn PDF document text
    • http://drawer.icu/fidget_spinner_ring_ukftgxh.pdfIn PDF document text
    • http://lnstagram-helping.live/discovering_geometry_chapter_8_review_answerskbbch.pdfIn PDF document text
    • https://bubinaxe.weebly.com/uploads/1/3/2/6/132681619/6489851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465255/normal_600d730716228.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/88027102711.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/2008_dodge_avenger_2.4_oil_capacity.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/jhfAjeF/the_sims_4_cheats_ps4_get_famous.pdfIn PDF document text
    • https://cdn.sqhk.co/zedugixaka/zEii0TL/american_history_quiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449170/normal_6002208f77334.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/hchhjaI/president_ramaphosa_latest_speech_on_covid_19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a59ff7-70a4-4af4-9158-0ba9c79eb740/what_are_the_4_main_disciplines_of_oceanography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/144f8b24-f357-4867-a9ff-85c05a532223/digosozusidizaxut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/827abd1e-7b2c-44ed-a18b-ed562fb6dd08/30397605455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c85ddca5-2e93-4068-9e5a-86248858da0c/how_to_bypass_printer_low_ink_canon.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_off0000ecf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF2 5584 bytes
SHA-256: e51c899acb418e0a64f042a523024b2a3405cd4e73df9632d31011b04aace0c0
font_01_sfnt_off0000ffeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEB 11440 bytes
SHA-256: a794a601b19f2406e9e8b7652b6e6f7c9d67d5cc56e9d3af08bcf4da26d31b3c

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