Malicious PDF — malware analysis report

Static analysis result for SHA-256 03fca19b6dee518f…

MALICIOUS

PDF

74.6 KB Created: 2021-03-08 03:32:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 090a83c9799832cb654a40d904ced08c SHA-1: 2d8f5156c9ba3b0777a8cf1259f3de06a7a04f74 SHA-256: 03fca19b6dee518f18b8f80b79e38465976cf72f7516757b73c6a30c1d2fda90
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://dugedepap.ru/aws?utm_term=diablosport+intune+i3+platinum PDF link annotation
    • http://raxewaponoxiv.mygamesonline.org/xivujetoxebofovezu.pdfIn PDF document text
    • http://lanejaselisipu.22web.org/14740827569.pdfIn PDF document text
    • https://wisolowiguwo.weebly.com/uploads/1/3/4/6/134630140/digeg-tikiropopir-xulazuvamemu-gajafedum.pdfIn PDF document text
    • http://vixitatevejiwo.getenjoyment.net/garmin_forerunner_220_istruzioni_italiano.pdfIn PDF document text
    • https://kesesitevon.weebly.com/uploads/1/3/5/3/135317357/548e936e6f3580.pdfIn PDF document text
    • https://cdn.sqhk.co/rinulazopun/pOraCih/nupufimem.pdfIn PDF document text
    • http://jilavixit.medianewsonline.com/34166457159.pdfIn PDF document text
    • http://pejokepi.mywebcommunity.org/36698521678.pdfIn PDF document text
    • http://keferadewurilej.22web.org/28246290563.pdfIn PDF document text
    • http://gomijojupi.iblogger.org/how_to_use_shark_rocket_vacuum_attachments.pdfIn PDF document text
    • https://fafafavavilaba.weebly.com/uploads/1/3/4/8/134893162/ramupizokoxifewusew.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzosiboweja/OHhhv2U/torn_meniscus_brace.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/sojaboxepase.pdfIn PDF document text
    • https://guzagixugowe.weebly.com/uploads/1/3/4/6/134687381/4909635.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://karerob.epizy.com/tactical_aide_memoire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd6473ef-6d0e-47cb-b504-94d1e5e9e098/how_to_thank_someone_for_immediate_response.pdfIn PDF document text
    • http://deketinak.rf.gd/98967385829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9fcca1f-f3eb-4200-b03e-b801a4cb9f43/jenn_air_stove_top_repair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00a7eba9-71cf-41f0-80e3-dc55a56c56d2/lexejigobalel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/664f06fc-81b3-4a53-90a3-ee2ff8a58255/40108384127.pdfIn PDF document text
    • http://notaruk.rf.gd/kibavovunixiwiwi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE654 5268 bytes
SHA-256: 98d28e63243aeac3fa6081bc15bb01ce4082f02444723b45737f94d316dd3e9e
font_01_sfnt_off0000f825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF825 10896 bytes
SHA-256: 5043cfa2ffcb9f592423f0845998b3ca93452a6eeda8abad1495d22872a778df

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