Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80e2b1b78dd6c71…

MALICIOUS

PDF

71.3 KB Created: 2021-03-24 00:28:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e928b946cf1c411b59fb0ed1185354be SHA-1: 1bd86cb86cedfe23c4e47446cef162a69331a379 SHA-256: b80e2b1b78dd6c711c4caed674adb1997c197f299b5babbd369d0532808e47ed
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-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://golowaki.ru/wix?keyword=sunbeam+cool+mist+humidifier+filter+replacement PDF link annotation
    • http://teenagetutor.net/webers_least_cost_theory1z80s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425230/normal_5ff1947f98933.pdfIn PDF document text
    • http://makeyourself.xyz/christmas_jazz_piano_sheet_music_freecxkss.pdfIn PDF document text
    • http://wiinorama.space/software_architecture_design_document1kubv.pdfIn PDF document text
    • http://dipunag.getenjoyment.net/barthel_index_modified.pdfIn PDF document text
    • http://circulyarkadigital.xyz/88457517826xunwk.pdfIn PDF document text
    • http://pemutoguxo.66ghz.com/free_al_quran_bahasa_indonesia_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501204/normal_6025b235871df.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/bavinebuv.pdfIn PDF document text
    • http://tifoxikutawe.sportsontheweb.net/the_magicians_season_5_episodes_recap.pdfIn PDF document text
    • http://xugilerasifoveg.22web.org/pulonujopikonagumajuvabe.pdfIn PDF document text
    • http://netewe5.xyz/389779209284a2rb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445337/normal_604729448e0fb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_4976c13f4c0847bab6eee17ae148422d.pdf?index=trueIn PDF document text
    • http://gedobesixo.epizy.com/whirlpool_quiet_partner_iv_dimensions.pdfIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/chocolate_war_movie_common_sense_media.pdfIn PDF document text
    • http://zujisofivo.onlinewebshop.net/hydrolysis_of_esters_and_amides.pdfIn PDF document text
    • https://b564fea6-732e-489f-a029-a72dc6590de2.filesusr.com/ugd/6a4619_52769e1cefd44227af682d27d100cdee.pdf?index=trueIn PDF document text
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_a8d6089bc0694d68baa39134493f9ff8.pdf?index=trueIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_71f41e0cacf542e7aa7e84fe23894cdc.pdf?index=trueIn PDF document text
    • https://fa202315-5cd5-4006-9a99-7c5d4406650e.filesusr.com/ugd/61804c_a51e40a41e2b4d8fb0669d41195a2789.pdf?index=trueIn PDF document text
    • https://b03e51a8-7171-48c0-94d6-e4c032e6f37f.filesusr.com/ugd/9421c8_fe986a0171c34d68bd06fdf66e4b3ff7.pdf?index=trueIn PDF document text
    • https://c827806f-f9bf-4fd3-a4ce-e487c020fa79.filesusr.com/ugd/6fd45c_20ddabe071604adcb4b2a9d5c416a66b.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_off0000d58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58C 5636 bytes
SHA-256: eb3bbff229e3979a86b8cb1f46e29f31a78aff23f7c1d51ee020a8f027f024e5
font_01_sfnt_off0000e887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE887 10956 bytes
SHA-256: c58169ca178374ff7aaec5aa0c405890c39b6115b30f1911f4d7e6658f5cfa46

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