Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19e0fc6a85aed5c…

MALICIOUS

PDF

78.5 KB Created: 2021-03-20 08:17:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2e7e0ebe196ae81639f2e3fd04197e08 SHA-1: 99eda22212731663616dc4463cd6bd35682feb1c SHA-256: c19e0fc6a85aed5c2b3bb6edd18f2f2a939d886d0295f031ba1955c3d24a50b8
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 0.9992

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://resalured.ru/strik?utm_term=what+is+the+meaning+of+dust+in+a+dream PDF link annotation
    • https://cdn.sqhk.co/pigevikuwi/d91o4pB/matlab_program_bandpass_filter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421939/normal_600c727826bb1.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/jjjh6IN/69904027836.pdfIn PDF document text
    • https://cdn.sqhk.co/jategumeb/1jbtLkR/62535604612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473052/normal_5fd320be49498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_601853f3ba6ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366620/normal_604e8496eed7f.pdfIn PDF document text
    • https://cdn.sqhk.co/raxavetaletu/2DgcigB/14_days_diet_plan_to_lose_belly_fat.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/cgeghu6/bloom_s_taxonomy_verbs_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379959/normal_5fc99fb242822.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/rikolesafuwofar/allure_report_protractor_cucumber.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/please_answer_the_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/75999132743.pdfIn PDF document text
    • https://d7301f0f-9730-4f6e-9d95-601e203cb770.filesusr.com/ugd/253413_4014e322e83843c9836950fa3cbfbf08.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widiku/is_ipad_air_good_for_animation.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/actiontec_c1000a_default_login.pdfIn PDF document text
    • https://3465328d-eb21-4af5-a94e-b8fdacefaafa.filesusr.com/ugd/c63bf9_820d53c0bcc94a708b7ef32003c553a0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukusa/8th_english_guide_free.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/4822732892.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/roketa.pdfIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_b0eed82245eb470fad0fd2f5b3c4e505.pdf?index=trueIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_9ca0b8d648a0465784bad8538a907884.pdf?index=trueIn PDF document text
    • https://79c9c32e-6572-42fd-9c0e-61d057d48a34.filesusr.com/ugd/33a1c8_fb3201dc184e4ad0a36a1c550142f129.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF387 5304 bytes
SHA-256: 962a9713e41dfae48bfa84922713ca1b199a14d23c2300fccdce970dfd922945
font_01_sfnt_off00010573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10573 11412 bytes
SHA-256: 8fbb29f934e33a99e9096b3142670a5d8b12316adbd46f718ab5e28bb961f48e

Open this report in the interactive analyzer, or submit your own file for analysis.