Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d680a83c73a366…

MALICIOUS

PDF

67.0 KB Created: 2021-03-10 07:33:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6191db28f75cfbbdf793914e24860c9f SHA-1: 131486611d0f8850075efb8b7c50990512e69a69 SHA-256: 26d680a83c73a366593d5cd3b0880fe8f260802bafbf9bd4cced17bd781220a8
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 0.9992

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://jottigo.ru/aws?utm_term=toro+sprinkler+controller+box PDF link annotation
    • http://myluckywin.site/kawuweseregidobimcxlov.pdfIn PDF document text
    • http://doucheop.xyz/13104185239uvq7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444866/normal_6017a399e7618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488335/normal_5fdc1ba3719be.pdfIn PDF document text
    • http://avtoshkola-region26.ru/vobemofokopuzninve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407100/normal_602e27bc880d4.pdfIn PDF document text
    • http://vladmer.ru/kutusumolizib1fafa.pdfIn PDF document text
    • http://mushygushysayings.com/car_racing_game_for_android_phonernpo1.pdfIn PDF document text
    • http://ilkertr.shop/19489307816qqqfq.pdfIn PDF document text
    • http://aicberg.net/full_movies_bollywood_2019vp6im.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/how_to_harvest_corpse_conan_exilesxltgu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414159/normal_60006e6b7859c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/defujo/75102938626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21d01f92-ac82-452b-917e-d3a59b767dba/how_to_reset_a_harbor_breeze_fan_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/588529cd-f5a6-49f6-87eb-69b1ba3794f1/epson_perfection_v550_photo_review.pdfIn PDF document text
    • https://1ba6f066-89d4-4445-b8a9-08a6de046ef2.filesusr.com/ugd/d40554_0b88c56bc08f461faa5147eeae72b1a4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/315259ce-2ec5-4469-9dd5-5141c3a05feb/zebco_202_reel_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/molefijo.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/gta_vice_city_cheats_apk_mod.pdfIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_fee7ba99f98d427dba4a628eb4505743.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/216451281.pdfIn PDF document text
    • https://828c6a01-da61-4814-986a-f72e64f4f334.filesusr.com/ugd/cdfdba_75fcf599b6464bbfbbf1d398042c4566.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/what_is_after_a_new_moon.pdfIn PDF document text
    • https://cceb078e-1df6-42b0-9e12-359f30e42f1d.filesusr.com/ugd/e8506d_75aa03ec2e804835a74565782893ee80.pdf?index=trueIn 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_off0000cb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9A 4940 bytes
SHA-256: 484aeefea216c53f9f6bc7b2cab5be2dca6e144ca76f56234147b889339908df
font_01_sfnt_off0000dc79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC79 9904 bytes
SHA-256: bc0dba811f4610b388585b453f4cee1e4bf672efbb805bbaa5a48235df4d99a5

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