Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a08d3e4e986b29d…

MALICIOUS

PDF

83.1 KB Created: 2021-03-23 11:56:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d9b7c2d29b1598e75abaf1889fb9cae9 SHA-1: b9530942e6a759bb890350b3a37824b3b376c31a SHA-256: 2a08d3e4e986b29d82774a0cf642a483b97edfd25120bafd729e0b13374cc933
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 pointing to disposable domains, indicating a link farm designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/123?utm_term=ayumilove+dual+blade+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469641/normal_603046de6ea4a.pdfIn PDF document text
    • http://hangzhoumetal.ru/bigo_live_apk_pcq1wsb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417212/normal_60170802979f4.pdfIn PDF document text
    • http://rubeatyshop.xyz/how_do_i_know_when_my_child_is_done_breastfeedingfaxgp.pdfIn PDF document text
    • http://fituxem.sportsontheweb.net/adjectives_superlative_and_comparative.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_6009e6c216ab6.pdfIn PDF document text
    • http://vijepuwobewi.mygamesonline.org/77520509346.pdfIn PDF document text
    • https://cdn.sqhk.co/sarowojep/avhbhbs/beasts_of_no_nation_book.pdfIn PDF document text
    • https://cdn.sqhk.co/tudusiki/iIMF6jg/avatar_game_keygen.pdfIn PDF document text
    • http://tamakar.xyz/lakirufo8jqh5.pdfIn PDF document text
    • https://cdn.sqhk.co/bowewulaxam/mmgcqAR/xunevixizekonadij.pdfIn PDF document text
    • http://jotafitosixa.getenjoyment.net/list_of_adjectives_to_describe_a_place.pdfIn PDF document text
    • https://cdn.sqhk.co/mujutuzidip/gjhO9lh/vowupoboveromiz.pdfIn PDF document text
    • http://kivolugog.mypressonline.com/3095137402.pdfIn PDF document text
    • https://cdn.sqhk.co/jivonaxadu/uihUjgO/motu_patlu_bangla_cartoon_video_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446045/normal_5fc72a43d77be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402481/normal_5fc9e9af54f68.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_69996dcfb2ad4f258de7595dab3fc201.pdf?index=trueIn PDF document text
    • http://fazaburifug.myartsonline.com/traxxas_summit_parts_axle.pdfIn PDF document text
    • https://c46c713f-5e69-4c64-aad4-d86f29440f76.filesusr.com/ugd/957c7b_197249cc162e46d09b905a41a5e8352d.pdf?index=trueIn PDF document text
    • https://58b86397-5572-43bf-ad9e-55c85049b59a.filesusr.com/ugd/10b03a_6b99502fcdd3484b96d790a94eee34cb.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C6 5164 bytes
SHA-256: 496bdb7405bc66f5e0e88e381f7515345cbd868a4ac5f2f50ac62324dfb4a99f
font_01_sfnt_off00011a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A53 10716 bytes
SHA-256: 5ea57c9fc3f22153709203d27fa666d01b18ec5338f8d04e58681560ec96ec78

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