Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b756ad6422206a…

MALICIOUS

PDF

75.2 KB Created: 2021-05-15 09:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6a110d33a8083608c8dc24779dfecfb0 SHA-1: 5354f679f7c015d11d74cba92ca6e1d86d7d1e61 SHA-256: 06b756ad6422206a3c8ccd22d33ea7247e9ec44f32b2cd39c995636cd0d91754
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/strik?utm_term=how+do+i+check+my+driving+record+in+ma PDF link annotation
    • https://waniritapi.weebly.com/uploads/1/3/0/7/130739375/digikarilogemej-dolon-pizinino.pdfIn PDF document text
    • http://siondez.ru/10129432140ubko6.pdfIn PDF document text
    • http://dosemamorozaj.22web.org/ap_eenadu_epaper.pdfIn PDF document text
    • http://hookup154.site/android_studio_app_icon_not_showing98j9f.pdfIn PDF document text
    • http://fusubakitakudup.66ghz.com/lewuzufukewijuvoluluzate.pdfIn PDF document text
    • https://luwimaxilonava.weebly.com/uploads/1/3/4/7/134772317/534dc47.pdfIn PDF document text
    • https://kujiguvasate.weebly.com/uploads/1/3/4/5/134584602/2d828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459922/normal_6041de199f5fd.pdfIn PDF document text
    • https://minetoleletumu.weebly.com/uploads/1/3/4/7/134767865/farevu_kuxigune_sovolax.pdfIn PDF document text
    • https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/b74900c7fb00e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470679/normal_605f5a8e6e74d.pdfIn PDF document text
    • https://pupizotewijuguw.weebly.com/uploads/1/3/0/7/130775862/zitevifoza_zoruwavozagu_dofadido_datojijiluzojil.pdfIn PDF document text
    • http://urott-hu.com/graphing_quadratic_functions_in_standard_form_worksheet_1_answer_key_rpdpm3kjn.pdfIn PDF document text
    • http://sochi2026.com/wekonexebetebitusopjb4.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/fb854a84-c061-4a27-a2e8-d500f521506b/gusozigelisixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/167de7ad-20cb-4aa8-8072-3fbf9dda3026/what_do_navy_reserve_officers_do.pdfIn PDF document text
    • http://buguwotibiven.rf.gd/lasobowesewanopodujawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/246e99b2-b751-4673-97e4-404a2c837a33/gavikunufinujofoja.pdfIn PDF document text
    • http://putilapabupipig.epizy.com/95939262000.pdfIn PDF document text
    • http://kiluwemejibe.rf.gd/30gt_carrier_chiller_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af49ce04-a61a-44d3-826f-2f20bca80dca/spanish_culture_lesson_plans_high_school.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_off0000e7c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C3 5420 bytes
SHA-256: 5b5dac185e790fc260d89a0f83e592494741c5caa7bd73ca9275f9790705560e
font_01_sfnt_off0000fa23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA23 10976 bytes
SHA-256: 3c3aa9f4f33e067bb4b44713eac5afd2be8d530e67f398482be6f02fc6c6fe34

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