Malicious PDF — malware analysis report

Static analysis result for SHA-256 a411e2e4b1e1c27a…

MALICIOUS

PDF

83.0 KB Created: 2021-04-05 04:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6d80b7387a9d63f6e99036c979db98fd SHA-1: 8a9895e21fc93d2a1e51245632f045e0cd73888b SHA-256: a411e2e4b1e1c27ad0a38341796760582c31265d2199fd2403bbb4d000fe3795
156 Risk Score

Malware Insights

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

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 0.9993

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 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.
  • 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://baarspo.ru/wix?keyword=m06-2x+dispersion+correction PDF link annotation
    • http://scoretdho.best/vishnu_sahasranamam_lyrics_in_englishbkv9z.pdfIn PDF document text
    • http://populiro.iblogger.org/ignou_solved_assignment_2020_ba_free_download.pdfIn PDF document text
    • http://persequen.com/79873695546ai9gu.pdfIn PDF document text
    • http://megahit.space/54848388905yppor.pdfIn PDF document text
    • http://dayzcommunity.info/surah_yasin_with_bangla_pronunciationbhsal.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/novipaliwid/gangster_2006_full_movie_khatrimaza.pdfIn PDF document text
    • http://vuwejamadadodi.epizy.com/98231727710.pdfIn PDF document text
    • https://cfc603e6-7cd4-4c42-812b-9722deb80ae4.filesusr.com/ugd/0e9fc2_d63a1fde272246ec8acc3800050af8a3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/gta_cheat_codes_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/miwurezigifoxufugeni.pdfIn PDF document text
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_698191fb2e0e474188c5a00b8d745c6a.pdf?index=trueIn PDF document text
    • https://0ac950e2-707a-4e47-8bf4-daface0ea9db.filesusr.com/ugd/356f11_2da8ca4c070944b5b16a8c3446952b32.pdf?index=trueIn PDF document text
    • https://d190c387-1498-4382-a59e-98d1a0a9794c.filesusr.com/ugd/a91264_795801656f7543c09759ba8f91c3396a.pdf?index=trueIn PDF document text
    • https://0fdd9f25-8366-4660-9463-376fd915ad39.filesusr.com/ugd/c16cf9_43ec405b468c4964af8f62f400b60708.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kofabube/neutral_grounding_transformer_sizing_calculation.pdfIn PDF document text
    • https://7e005a1c-fb68-43c1-af83-b854b6a2d282.filesusr.com/ugd/dcfb95_304d8103b68040a4bd81a0cfb53d2fb3.pdf?index=trueIn PDF document text
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_2512184e2c9846229fa46d0b88023d7e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/xawerotanovobovopekozu.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/al_quran_terjemahan_kemenag.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/6535830232.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/fezenufonowibuxuborunuw.pdfIn PDF document text
    • https://b564fea6-732e-489f-a029-a72dc6590de2.filesusr.com/ugd/6a4619_272387da29f74136abe4d253eedf4864.pdf?index=trueIn PDF document text
    • https://dfa52777-3edb-460f-9b14-ca5101cd4ecc.filesusr.com/ugd/5360f8_81f6bd28bb2c46258fd10834f3540039.pdf?index=trueIn PDF document text
    • https://7980b0ff-2efe-48f4-a442-6c87bca80713.filesusr.com/ugd/9bd8c3_7ca9d10f2b464bd0ada1923579eaae9b.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_off00010448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10448 5360 bytes
SHA-256: 4b90b9fbd87f2301625b61695898fe8dec837837ff1c2eabeb674300215d1358
font_01_sfnt_off000116b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B3 12112 bytes
SHA-256: c0f9e1a8efae25eb8a122889defdf25f5ec86535e117ff5a3d95ee93b9ebcb64

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