Malicious PDF — malware analysis report

Static analysis result for SHA-256 90bb103597ec52f0…

MALICIOUS

PDF

86.3 KB Created: 2021-03-18 07:28:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 56f6c3ec2530f1c47638c076790b50cf SHA-1: 10ae377ae8b4293de3eee8f8ce17c03da00d6816 SHA-256: 90bb103597ec52f034f6285b37b16c0cacc1a330864848c57d71b87af764b296
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://jumiwimov.ru/123?utm_term=grade+2+math+worksheets+south+africa PDF link annotation
    • http://ludshop.xyz/optimate_4_battery_charger_bmwztrno.pdfIn PDF document text
    • https://zejobivajetipud.weebly.com/uploads/1/3/0/7/130740466/8561675.pdfIn PDF document text
    • http://olymp-trade.top/ceza_hukuku_genel_hkmler_pratik_alma_kitab0h787.pdfIn PDF document text
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/2347523.pdfIn PDF document text
    • http://onlinetiser.website/110168799063d0p4.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/88755505296urk3t.pdfIn PDF document text
    • https://jokazetesolibut.weebly.com/uploads/1/3/5/3/135314514/zasekatuzenidumodule.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/19ba4.pdfIn PDF document text
    • https://gofuzuxelizexo.weebly.com/uploads/1/3/5/3/135391542/xuxijos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8e12fe21-47c1-448c-af9e-883e7c84523b.filesusr.com/ugd/52ac5e_1b43196b94264cc487cf58d110fbbcef.pdf?index=trueIn PDF document text
    • http://gamemogap.epizy.com/nowadulagutifuvazelasefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a0dcb0f-9fe1-43a9-a7b0-b1175a20ae90/zalopetodegebovijegizat.pdfIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_b0a779fa1a9248f382fa0ac56397ea62.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/the_odyssey_books_1-5_sparknotes.pdfIn PDF document text
    • http://relavidapozo.epizy.com/garmin_gps_64_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/alder_lake_wa_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/31623631646.pdfIn PDF document text
    • http://duwopatovulid.rf.gd/islamic_dua_book_bangla_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93a72483-ef86-4bed-b881-6a01199b49e7/how_to_address_apo_customs_form.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/jekenupamefuget.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_off00010520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10520 5548 bytes
SHA-256: 90e4aced9755947888a51de0dc8e01ea51e41aa0c1f900dda0f76f4f9ca5f888
font_01_sfnt_off000117e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E8 1936 bytes
SHA-256: 84daf345e21b08075a6e329eeacb0a13a0447ddcc3efc64e98a9a4ab9c6a9d9d
font_02_sfnt_off00012129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12129 12316 bytes
SHA-256: 94e771c521426bfe57ef10983d48a9b099543c879e9de72f3ac77132410a50f6

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