Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8bea97344e9969b…

MALICIOUS

PDF

73.2 KB Created: 2021-04-07 03:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 734d103f7efb38632ec4c76362941c6b SHA-1: 5b5611a125b0a1735b2d979caf49891c29fe6969 SHA-256: b8bea97344e9969bcdba9593d7b64f356f1e37e789a7945fbe1f3531b3fe16b4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9960

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 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://soxebez.ru/strik?utm_term=critique+of+practical+reason+quotes PDF link annotation
    • http://zelenege.iblogger.org/block_site_android_firefox.pdfIn PDF document text
    • http://ralugugifoxatir.scienceontheweb.net/taruzedipivaxejapuvasa.pdfIn PDF document text
    • http://lizuzezusad.medianewsonline.com/increment_and_decrement_operators_in_java_with_examples.pdfIn PDF document text
    • http://wodekenizowa.getenjoyment.net/regasu.pdfIn PDF document text
    • http://kazotapojiwi.mywebcommunity.org/novel_sejarah_bandung_lautan_api.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420449/normal_5ffb7cda8a30e.pdfIn PDF document text
    • http://vevaroda.scienceontheweb.net/21294159621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_60102b044e449.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/absa_premiership_fixtures_2020_20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_601916334fde5.pdfIn PDF document text
    • http://pobesegu.scienceontheweb.net/avantage_de_l_allaitement_maternel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450340/normal_6019bb9851c8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446491/normal_6060ecb13cc52.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gatituz.rf.gd/mamesi.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/brushes_for_procreate_ipad_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/interior_design_schools_online_accredited.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76730e49-77d3-474a-b8ca-ff639e5e1757/82743477369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dcd58cd-7269-4dbd-a8e6-44abb49e5166/73332129102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec0953c-af11-4eaa-8662-b234cb379c05/what_is_the_central_conflict_in_antigone.pdfIn PDF document text
    • http://lokuvutifinulef.rf.gd/28889454215.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/gubozugokagumutuzodopal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c75e668-b778-4bc3-8ea7-289596804bff/data_mining_techniques_ppt_download.pdfIn PDF document text
    • http://wogokafen.epizy.com/942260706.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/how_to_start_an_interview_essay.pdfIn PDF document text
    • http://wubonaxe.epizy.com/zefam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80c9fd48-fd3e-4c88-97ad-50ddf35689a3/no_game_no_life_zero_shuvi_figure.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16C 5040 bytes
SHA-256: 46e8f574d812c6d4ca756df0dd6710b92b5550b44264369ef820467ee62a5a1e
font_01_sfnt_off0000f2a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A2 10824 bytes
SHA-256: 33a7b008cb6fa1e05791bdbc58615ac2e8fc7de1a188abcbda5d2f9791bc9d7d

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