Malicious PDF — malware analysis report

Static analysis result for SHA-256 44458788e314ce26…

MALICIOUS

PDF

94.8 KB Created: 2021-03-23 08:27:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 65f0d58f6544c4dfe1dd3f35d723305b SHA-1: 1d0cca7ab46575ad9e8779f54daf05b834e759c7 SHA-256: 44458788e314ce26ea4c6f83ed2682395a0402b5f40995d33a6c4909ebeb7c09
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 0.9994

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://resalured.ru/123?utm_term=pattaya+nightlife+guide+2018 PDF link annotation
    • http://shop50off.info/how_to_train_your_dragon_3_4k_steelbook8goui.pdfIn PDF document text
    • http://tvoy-ogorod.online/define_conduction_velocityfk0q0.pdfIn PDF document text
    • http://marketes.pro/688318156277vpib.pdfIn PDF document text
    • http://look-hotel.com/any_nail_places_open_today_near_menirty.pdfIn PDF document text
    • http://fruittea.space/matematiin_gnlk_hayatta_kullanld_yerlerppa89.pdfIn PDF document text
    • http://megatorg.ru/pimujijod92ood.pdfIn PDF document text
    • http://zhk-samolet-krasnodar.info/tokyo_ghoul_girl_characters_names4uam5.pdfIn PDF document text
    • http://leyloften.online/what_is_in_physics_paper_2wmtru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vosimamasi.epizy.com/11537449024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c179854-739a-416d-9170-8415d47e8417/webirovunimovubexukaniwud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfc9fe4f-e4d4-4ea2-9e90-6c1da45a9da7/adjust_time_adidas_digital_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/river_wye_paddling_guide.pdfIn PDF document text
    • http://sarebabeb.epizy.com/sharp_aquos_60_inch_tv_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/baladoor_movie_hd.pdfIn PDF document text
    • https://4a7d9d2b-1d67-446c-8d6d-bdd3043d1f60.filesusr.com/ugd/c3d078_eca02751273842a2b833c9efb0b6ae46.pdf?index=trueIn PDF document text
    • http://xagejinije.rf.gd/tajepi.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/97025018306.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/bisleri_advertisement_2019.pdfIn PDF document text
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_6f7c144f8dd74de7bf807c38e1985b07.pdf?index=trueIn PDF document text
    • http://kidajovude.epizy.com/36073356943.pdfIn PDF document text
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_332aebc3c3b44b1085a79edde685096f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/dead_poets_society_book.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_off0000e8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C9 22740 bytes
SHA-256: d09edb09eb66ed8424a51675d5ad5ac528e5755f74bc519cc761ba8899668b0f
font_01_sfnt_off0001320c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1320C 5516 bytes
SHA-256: 3b49421ede8c28cb4ac3d7ab5cf62dd6679d7639fb56d923aa121f53f7253199
font_02_sfnt_off000144dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144DC 12012 bytes
SHA-256: 730da7283cc63ec723b430fb3785b17cd5c48915230fa8f0b2400916519c9d0a

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