Malicious PDF — malware analysis report

Static analysis result for SHA-256 327fde408a421c2e…

MALICIOUS

PDF

72.1 KB Created: 2021-06-10 12:27:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e900818c56478f87fca848badb5ca9fa SHA-1: a6ad4582badba516edb26376e914606e3704e4af SHA-256: 327fde408a421c2e2001da8001d465db91fe10f9c90883850df76d4c3afa536b
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-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://irlanc.ru/pbw?utm_term=god+of+war+psp+rom+download PDF link annotation
    • https://kikeletiwemuk.weebly.com/uploads/1/3/4/6/134671512/zutigotufavi.pdfIn PDF document text
    • https://givudaxoj.weebly.com/uploads/1/3/4/4/134490896/wakozozo.pdfIn PDF document text
    • https://pomerizumuwer.weebly.com/uploads/1/3/4/5/134523620/9263913.pdfIn PDF document text
    • https://moganuvutixeku.weebly.com/uploads/1/3/1/1/131163890/4e3d7f34251c925.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459926/normal_5fee082018ed1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_60256c151bc9d.pdfIn PDF document text
    • https://rizowowomupi.weebly.com/uploads/1/3/4/3/134344214/6697071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475383/normal_600f635de02a2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lulimogosan.pbworks.com/w/file/fetch/144492582/the_legend_of_zelda_the_minish_cap_nintendo_game_boy_advance_rom.pdfIn PDF document text
    • http://gupiguna.pbworks.com/f/wemifupenon.pdfIn PDF document text
    • http://dazokarodu.pbworks.com/w/file/fetch/144789705/which_dog_breed_sheds_the_least_in_india.pdfIn PDF document text
    • http://bogomosimu.pbworks.com/w/file/fetch/144873669/caddo_parish_sheriffs_department_arrests.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1013ee45-7a80-4b58-abc7-915fb6f5e81b/fairy_tales_stories.pdfIn PDF document text
    • http://jifesepapo.pbworks.com/w/file/fetch/144559332/is_the_driving_test_hard_in_illinois.pdfIn PDF document text
    • http://saxonax.pbworks.com/w/file/fetch/144681561/what_are_the_strengths_and_weaknesses_of_qualitative_and_quantitative_research.pdfIn PDF document text
    • http://luwapoveduvi.pbworks.com/w/file/fetch/144485109/97199160753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca888ce3-4a0e-4b00-bbcb-b476e9fe5c8d/what_is_hardware_and_software_short_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/634f80e9-d0cc-4f09-a562-2bb800311541/fedekolepo.pdfIn PDF document text
    • http://vifogajo.pbworks.com/f/hamraaz_army_app_6.5_version_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db852874-d10c-4827-8c59-cddc75588793/74081869103.pdfIn PDF document text
    • http://jolowajuwijo.pbworks.com/f/instagram_followers_increase_app_neutrino.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_off0000dc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2D 5308 bytes
SHA-256: 3eaaecfb0431a63587a781986ed748022e6907439ee7dfb13e35f8716cf5ea38
font_01_sfnt_off0000ee39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE39 11308 bytes
SHA-256: d2368d3203893104c4853df385beb70ad0c5f8c32ec041ba1284a11059bb70d7

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