Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a86448a24c2b582…

MALICIOUS

PDF

79.2 KB Created: 2021-03-19 06:38:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e6b9c1d3c634dba7d8aee352735809f6 SHA-1: b675ed8aa436ea099042466f00687ace925d669d SHA-256: 4a86448a24c2b5825767955ec74847b6c42fae4e1b6711490121db4df212008c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body and extracted URLs suggest a phishing or link-farming scheme, attempting to redirect users to various websites under the guise of search results. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity, likely involving the exploitation of PDF vulnerabilities or social engineering to drive traffic to malicious sites.

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 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://golowaki.ru/wix?keyword=archie+comics+chilling+adventures+of+sabrina+pdf PDF link annotation
    • http://midimox.getenjoyment.net/60584723724.pdfIn PDF document text
    • http://islemleriniz.org/how_many_calories_in_chick_fil_a_southwest_salad_with_dressing77wet.pdfIn PDF document text
    • https://mizovitima.weebly.com/uploads/1/3/4/2/134266674/talipaxuvalumazabe.pdfIn PDF document text
    • https://xidazujagavoza.weebly.com/uploads/1/3/1/4/131453269/gufolitara_vuvexaruzi_bejabagosan.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/58791858924.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457582/normal_5fffde73a96d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481282/normal_602ee5c6df12f.pdfIn PDF document text
    • http://lumacy.site/57589628913s6ek6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458852/normal_6019270c06121.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/hvcHhbS/mikuxutevagofiso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501214/normal_5ffd6f6d51a15.pdfIn PDF document text
    • http://fruitnaturs.space/lepamakfe7xz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422382/normal_5fd1dc331152f.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/gjoijh6/zombie_strike_nerf_guns_ebay.pdfIn PDF document text
    • http://kodepovorivapi.mygamesonline.org/fovidasuko.pdfIn PDF document text
    • https://cdn.sqhk.co/gepibilis/hd1jejh/22446753824.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/gejj39a/3dlut_mobile_unlocked_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/Wjfjbib/commander_in_chief_lyrics_writer.pdfIn 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_off0000f67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67A 5756 bytes
SHA-256: ffd4eca9629145ed81bdfbd96ba128dd06cd14e6d6b9f6a8de40f95f83c97f0e
font_01_sfnt_off000109f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F0 10836 bytes
SHA-256: f643fa1b2df7d3bdb0797f84124d829942e0da099182c9d00c2685ac805e16cf

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