Malicious PDF — malware analysis report

Static analysis result for SHA-256 97325a4dd425cb25…

MALICIOUS

PDF

80.3 KB Created: 2021-04-20 17:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: de4703b2eee64f9abd90d21be08265fa SHA-1: 74cb206819e25055a4e59eb7fad9c79ef356c473 SHA-256: 97325a4dd425cb25835d49a1a96f8446fb1f48a0bf867856f97096501b848c28
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 0.9998

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/strik?utm_term=how+to+start+writing+a+novella PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456369/normal_605be4fee4a1e.pdfIn PDF document text
    • http://lodubesemo.iblogger.org/baby_einstein_sea_dreams_soother_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497346/normal_5ff0463fd5d24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388815/normal_6045f8b5b0211.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407057/normal_5fec40cf59ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_603b5f0b200d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luxaneguwes.rf.gd/jezezudekitelorim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8baf1be8-c9fb-495b-b53d-5f428941f1c8/how_to_write_a_critical_reflection_of_an_article.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12df151e-0294-4067-9286-95012d3e5a70/kejinananitidu.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/hip_hop_dance_choreography_videos.pdfIn PDF document text
    • http://zudagedat.epizy.com/susajalubazalaxudogemezum.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/how_to_write_a_chairpersons_report_for_an_organization.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/crochet_stitches_guide_uk.pdfIn PDF document text
    • https://4461694d-a6f7-4a69-895a-ff5ddeb3c622.filesusr.com/ugd/f504fb_cce859ee1ac14b8090451b203f5818ec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4670b123-aa1a-412f-8c61-c6f214be164f/the_7_basic_human_needs_that_successful_businesses_focus_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e5fe84d-0923-4af6-a891-582e1a063752/the_power_of_one_book.pdfIn PDF document text
    • https://daa82c20-c2c2-4c2a-a78a-9e34c7d8fbea.filesusr.com/ugd/9c43ec_012c8a16cecd4ceba7f1f219f3b9c9c2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/grey_sheet_food_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/email_format_for_vacation_leave.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED5 4964 bytes
SHA-256: 95d4ab29c89aafa428f47e2baeff69ddefcaeeafb14fe5c2ae2614622266985f
font_01_sfnt_off00010fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDE 10676 bytes
SHA-256: c821da121295a706f00ea88500ff80e101cf1fb29f903f474d4a53ade50e7c60

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