Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fae9501e3e6a945…

MALICIOUS

PDF

86.9 KB Created: 2021-04-03 10:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e4d69df72766486ee476c71417e2c4f2 SHA-1: 5a1aed7f92861f8febb54d3e3f249ba82aecb0f2 SHA-256: 1fae9501e3e6a945b7d0981696cb1f31df7018afe7f86789890e843f8cac0d9d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9990

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 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://maypoin.ru/strik?utm_term=why+is+nonviolent+communication+important PDF link annotation
    • https://cdn.sqhk.co/gidetixi/yhb6kjj/sodawivatagividusu.pdfIn PDF document text
    • http://megahit.space/olympus_e500_battery_doorebota.pdfIn PDF document text
    • http://pemutoguxo.66ghz.com/anlage_ve_jobcenter.pdfIn PDF document text
    • http://wuvevaj.iblogger.org/27159444306.pdfIn PDF document text
    • http://itrom.fun/heil_furnace_exhaust_blower_motor1s2n9.pdfIn PDF document text
    • http://halfraire.xyz/42613290488nslia.pdfIn PDF document text
    • http://pressit.fun/english_stories_for_students_with_picturesnqw5e.pdfIn PDF document text
    • https://cdn.sqhk.co/dufadafakuti/zsxNvhe/virtual_slime_free_online.pdfIn PDF document text
    • http://xtrading.buzz/873766155515lch4.pdfIn PDF document text
    • http://caterm.ru/11458283016jh21r.pdfIn PDF document text
    • https://cdn.sqhk.co/fetogivaw/OX5hjVm/mizixuzuguw.pdfIn PDF document text
    • http://mgacessoria.online/how_to_read_thinkorswim_appbikn9.pdfIn PDF document text
    • http://xodaxedepapopox.mygamesonline.org/99640569426.pdfIn PDF document text
    • http://biolinkus.me/wavasumotibimogipupozukip6f3zv.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/essential_academic_skills.pdfIn PDF document text
    • http://copyrightsupporteds.com/71247887171wbk69.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/aIbXRid/cs_deals_withdraw.pdfIn PDF document text
    • http://abreudesigns.com/prevent_submit_form_javascriptgckmg.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/resabomibogodaw/indesign_product_catalogue_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/iiit_hyderabad_admission_form_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/managerial_economics_game_theory_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/1st_edition_monster_manual.pdfIn PDF document text
    • http://jurorinidup.rf.gd/56850008399.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_off00010668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10668 5228 bytes
SHA-256: 2d7fdd7a2ada52ecc798a1a5d1b368caddd04f713d1d77a28123b3f338fdde00
font_01_sfnt_off0001180c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1180C 11108 bytes
SHA-256: f8604c1f7891f7de55f21e0df643f4b5643cac639f2a704b6808f1cf8621030a
font_02_sfnt_off00013ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DDB 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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