Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e225947c7c73069…

MALICIOUS

PDF

67.7 KB Created: 2021-02-16 20:37:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b6252ebe9db9f53d16dacd410397d730 SHA-1: ccb87a2f69e8242c35f629f87bf479aaf53096c9 SHA-256: 2e225947c7c7306991c1bfdc1aaf59c063fe1b063a683fd80d9c0b6ab24ebb48
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

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
  • 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.
  • 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://jacksth.ru/wix?keyword=apk+minecraft+apkpure PDF link annotation
    • https://cdn.sqhk.co/ruvonusebex/xuZHhcg/doletunezogezezokike.pdfIn PDF document text
    • http://reflectionss.space/anark_core_3d_templateav44a.pdfIn PDF document text
    • http://goodshopsales.xyz/8651723472066435.pdfIn PDF document text
    • https://niraniki.weebly.com/uploads/1/3/4/6/134662237/8657930.pdfIn PDF document text
    • http://instapodarok365.site/672537465832fahy.pdfIn PDF document text
    • http://cadenalia.com/letiwomutixebevege2akhf.pdfIn PDF document text
    • https://budojidotepaso.weebly.com/uploads/1/3/5/3/135312143/wimuzawe.pdfIn PDF document text
    • http://vereffka.xyz/aspen_plus_v8_free_downloadjg8bx.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/KvNjdji/free_printable_love_coloring_pages_for_adults.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/jgeggjf/61932880146.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumabigige/7hjC08O/62142657925.pdfIn PDF document text
    • https://cdn.sqhk.co/fepexeguma/Dihvfib/southern_illinois_police_scanner_frequencies.pdfIn PDF document text
    • https://cdn.sqhk.co/wozovege/jbhghiB/26072293274.pdfIn PDF document text
    • https://cdn.sqhk.co/togodawexu/giundyW/59470646965.pdfIn PDF document text
    • https://waxutawuvesi.weebly.com/uploads/1/3/1/4/131455398/nevetibugoxij.pdfIn PDF document text
    • https://mubatizusilaboj.weebly.com/uploads/1/3/4/4/134475350/zavopegovifurexide.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/4621083.pdfIn PDF document text
    • https://xukonixivuki.weebly.com/uploads/1/3/0/9/130969652/dudemeban_dafede_fawewujufi_jiguvizuwined.pdfIn PDF document text
    • https:///www.minecraft.net/helpIn PDF document text
    • https:///www.minecraft.net/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c92c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC92C 5004 bytes
SHA-256: 2bdc8751cef9dd61fdaff300dec5e8b9df5984a37de7e08d4219f661efe28043
font_01_sfnt_off0000da23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA23 14016 bytes
SHA-256: 76befc780623dd521d2ac908b244f3bc0ee84404d0acfcf908a682a333b4b711

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