Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9f14fa51f2030a…

MALICIOUS

PDF

72.2 KB Created: 2021-03-25 16:09:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 08e1db1d85df9c3f419a6e1815039442 SHA-1: 0f49e02b2fab99c2b2558a736c963295ebea21f6 SHA-256: be9f14fa51f2030af22376a762d1576ac81af883f4931f297ea039875fd87281
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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 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://botokaw.ru/award?keyword=chemistry+notes+class+10+pdf PDF link annotation
    • http://shop-onlinediscount.xyz/literary_elements_used_in_the_tell_tale_heartcuqt7.pdfIn PDF document text
    • http://gudowubalage.iblogger.org/reading_comprehension_practice_4th_grade_games.pdfIn PDF document text
    • http://samo-katim.ru/mezanetigurugokakodupue649.pdfIn PDF document text
    • http://cryogen.me/tijevibisitidiwirepplsmi.pdfIn PDF document text
    • http://freshnatur.fun/3176039974hvl8r.pdfIn PDF document text
    • http://hh666o.site/integrative_literature_review_definitionspdzd.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/3918049f-a899-49c4-b2ca-b6888d9b3478/96076035493.pdfIn PDF document text
    • http://jeragapa.epizy.com/50752951871.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/punctuation_rules_and_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/96852857351.pdfIn PDF document text
    • https://33798d8d-46b8-42ca-8133-68f4d4f78a51.filesusr.com/ugd/f34823_5abe0f5e504c4e589397396d11930e8a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/bokomodupumapivexolozuwon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee8cfff-f9ed-435a-8454-729dc9c4e724/how_many_calories_in_a_whopper_with_no_cheese.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/preschool_sinhala_songs_video_free.pdfIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_f0c1303f4724460bb2229cb87fe3a80c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lebejos/traduccin_espaol_frances_reverso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d180ff7b-82bb-42b0-9f54-70f89c15236d/apache_shiro_is_dead.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/gumegorame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4ce0bea-89c4-4fe8-ae1f-ef4fdd85801e/kaloruvinofirezot.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/visubomunamijagu.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/budd_chiari_syndrome_guidelines.pdfIn PDF document text
    • https://5ac9d038-517d-4536-97f6-676423289421.filesusr.com/ugd/b444d4_46eaff05b4e7437e8d971eeb310fd92e.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_off0000dbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB1 5596 bytes
SHA-256: 99b504da06b5ad2fb3ddc8f4d04c647dd9694689ecd50f2dea7fa6679b9729b5
font_01_sfnt_off0000ee92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE92 10972 bytes
SHA-256: 072d9a985169886ce6665a16e7437f429c0864085410012f8b73d01037674e09

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