Malicious PDF — malware analysis report

Static analysis result for SHA-256 862c19f2cee86c95…

MALICIOUS

PDF

72.4 KB Created: 2021-02-11 20:36:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e264a59475880abc82c7b81a2af6c307 SHA-1: 2cd055049d67cada35546f1547f2d510eb38354b SHA-256: 862c19f2cee86c95f13efc74c4bfb7b53bdcdaa7d581289d2aa9efe1048327e0
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://crophysi.ru/wix?keyword=because+of+winn+dixie+book+pdf+download In PDF document text
    • https://dopozigixojak.weebly.com/uploads/1/3/4/5/134509916/7fbf5dbcf84.pdfIn PDF document text
    • http://bevurib.22web.org/cancer_de_tiroides_metastasis.pdfIn PDF document text
    • https://cdn.sqhk.co/gekakisoduvo/hfSjhjj/59733968695.pdfIn PDF document text
    • https://cdn.sqhk.co/loxosefivipo/7v9Zjf8/12955759105.pdfIn PDF document text
    • https://mulomaninivoxom.weebly.com/uploads/1/3/1/4/131437045/limitudijizek-vagawoxariwupun-berananuwawol.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/ihsgiTm/farmville_2_tropic_escape_online.pdfIn PDF document text
    • https://jevokave.weebly.com/uploads/1/3/4/2/134266272/zewimosuki.pdfIn PDF document text
    • https://benesigonej.weebly.com/uploads/1/3/1/6/131607635/nosuxaw.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/gTKgg5C/51449403527.pdfIn PDF document text
    • https://pivisagut.weebly.com/uploads/1/3/2/8/132815367/f4c675a056c1.pdfIn PDF document text
    • http://modebedunizux.iblogger.org/xenasemodakojazolagenuvi.pdfIn PDF document text
    • https://pozanabuloga.weebly.com/uploads/1/3/4/3/134366917/5805271.pdfIn PDF document text
    • https://guxiwuwo.weebly.com/uploads/1/3/1/0/131070036/10fb3386bcae3f.pdfIn PDF document text
    • https://cdn.sqhk.co/zinumazak/uihqgey/beat_a_dead_horse_idiom_synonym.pdfIn PDF document text
    • https://wotuvinuvokotar.weebly.com/uploads/1/3/5/3/135330473/2435412.pdfIn PDF document text
    • https://kifeketefisub.weebly.com/uploads/1/3/5/3/135347095/867061aa4551bf7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zubeleboju.epizy.com/15712131717.pdfIn PDF document text
    • http://wipojijize.rf.gd/multiplication_chart_1_12_printable_with_answers.pdfIn PDF document text
    • http://pexaniruvuwuwe.rf.gd/ongc_reports_2018.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_off0000dcfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFB 5464 bytes
SHA-256: 7cade4b2d4cf6586d5f02deeeb5dd0e9df01e85263f514607662768c854efa63
font_01_sfnt_off0000efbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBE 10672 bytes
SHA-256: 09448a1fc1ea50a40ad70e388cd878a5c282314553a042a2223cbfb5f7d2c7d4