Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee04fb076e60be7…

MALICIOUS

PDF

72.6 KB Created: 2021-03-14 23:59:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 33faec038a805f06e207c002b6c33f44 SHA-1: bad679f2ea962389bbf955f97395e6cff7aba043 SHA-256: 8ee04fb076e60be74869f5757f0a6ac77ee261d5e53c14e09ff03c679e431b33
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://pelibifir.ru/award?keyword=all+battery+types+pdf PDF link annotation
    • https://cdn.sqhk.co/mugegiduveb/ajcjhie/fukozu.pdfIn PDF document text
    • http://filozajerezabi.getenjoyment.net/what_is_non_economic_loss.pdfIn PDF document text
    • https://cdn.sqhk.co/poladejug/iO2Hhf2/17757877710.pdfIn PDF document text
    • http://sokujojetutita.iblogger.org/black_and_decker_cmm1200_parts.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/what_is_included_in_dodge_durango_tow_package.pdfIn PDF document text
    • http://megantv.site/how_to_use_photoshop_cs6_in_hindiig9o0.pdfIn PDF document text
    • http://8gusevshop.website/tapsonic_top_music_grand_prix_mod_apkz91tx.pdfIn PDF document text
    • http://fawakosiki.22web.org/vector_sums_magnitude_and_direction_answers.pdfIn PDF document text
    • http://tipatav.22web.org/duwivejalunusid.pdfIn PDF document text
    • http://rafidoletusamox.22web.org/cannonball_run_2_movie.pdfIn PDF document text
    • http://tizezs.xyz/pamuvulajekasukogupbhrr.pdfIn PDF document text
    • https://cdn.sqhk.co/pininipata/whe5jid/73100771066.pdfIn PDF document text
    • http://mazers.fun/wiponivukinemesalz65y9.pdfIn PDF document text
    • http://arenda-comp.space/muladosong8cw.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/2de627bf-b1e1-4759-89b0-fe0d8dd323ab/karcher_395_power_washer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9888f66-773a-43a5-a697-cfcb6863a5fb/the_wahls_protocol_diet.pdfIn PDF document text
    • http://romakilax.myartsonline.com/94028919846.pdfIn PDF document text
    • http://bolatufor.epizy.com/82743515601.pdfIn PDF document text
    • http://riberudedanute.epizy.com/ocarina_of_time_3ds_rom_android.pdfIn PDF document text
    • http://joposib.rf.gd/80322037239.pdfIn PDF document text
    • http://batawovajupofu.rf.gd/cinderella_1950_english_subtitles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8cd405-bcc8-4e7e-a14a-6dca98fece2c/pogakafimex.pdfIn PDF document text
    • http://xidovofetukik.epizy.com/easy_guitar_chords_songs_for_beginners_with_3_chords.pdfIn PDF document text
    • http://sopazizepo.rf.gd/dolelake.pdfIn PDF document text
    • http://zibevili.onlinewebshop.net/rogipelazaruw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc9043e4-7897-4864-8886-0c9ecc64d8ca/ridgid_miter_saw_stand_assembly_video.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_off0000dec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC3 5264 bytes
SHA-256: 50789d37491974c3a4cd758619af79b32f34c2678cd6dc845907e3df69448410
font_01_sfnt_off0000f0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B9 10600 bytes
SHA-256: 1dc087def3b3398109b9e9df4a581ada847040b3a8424f2c24112d23b8c7038c

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