Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7771a7e99f3a92…

MALICIOUS

PDF

73.1 KB Created: 2021-02-15 22:59:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a79ecf7ccc0592224f74fe463a221a0d SHA-1: ddad6b7d52a413c3bb876f85f88b091626d55a07 SHA-256: 4e7771a7e99f3a92f73332a9e57556a98347855e0e79373b176a7d8e1d9e7c62
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wix?keyword=geometric+transformations+vocabulary+crossword+puzzle PDF link annotation
    • https://cdn.sqhk.co/famuxina/JElhfie/2426894759.pdfIn PDF document text
    • http://boxidodo.22web.org/66318288458.pdfIn PDF document text
    • https://cdn.sqhk.co/revukone/DDhigcS/black_clover_phantom_knights_jp_characters.pdfIn PDF document text
    • https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/241da2ec423033.pdfIn PDF document text
    • https://cdn.sqhk.co/kupawusel/N7uYjhf/96395974696.pdfIn PDF document text
    • https://cdn.sqhk.co/zusisoko/ZaidDjg/54612124915.pdfIn PDF document text
    • https://zemaxixose.weebly.com/uploads/1/3/4/6/134636511/8044508.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/hhT2iji/spotlight_theater_bistro_hartford_ct.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/sLFVbja/1244044163.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/donake/38110290635.pdfIn PDF document text
    • http://milifarininigo.rf.gd/bipap.pdfIn PDF document text
    • http://fifomivosa.rf.gd/xaredekapenopig.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/akc_canine_good_citizen_test_summary_form.pdfIn PDF document text
    • http://sarozaxag.epizy.com/15550628628.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/laser_a2_student_s_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/tilibeno.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/breathless_song_free_with_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/wipexefa.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/alcohols_in_organic_chemistry_chemguide.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/sikofepexikagam.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A2 5656 bytes
SHA-256: e9122757863f16c200dae61bb86330e590d2fb42e91e75e615fcd1337188f6f3
font_01_sfnt_off0000e5e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E8 10124 bytes
SHA-256: 5350ae3c8720c73f960bc4fc28d5b9faec9bd3c9c7144dc305b69059fc541d3f
font_02_sfnt_off0001088f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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