Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62f8d61685cb3aa…

MALICIOUS

PDF

75.1 KB Created: 2021-05-20 03:35:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b5de16b5439098950c54ac11d5e2e190 SHA-1: eba7a235de8a11006cf5e9f4217c052bb2713a99 SHA-256: d62f8d61685cb3aa358c264c6eaa16356dc72d3dd6dc6726cdfc2ff62b4dc56a
156 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 Weebly-hosted PDFs, indicative of a link farm or phishing infrastructure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/strik?utm_term=how+to+set+philips+respironics PDF link annotation
    • https://lonofajizol.weebly.com/uploads/1/3/5/3/135389348/belikiw-misokoduwojig-karodobir-neludeweze.pdfIn PDF document text
    • https://wojaginobaxap.weebly.com/uploads/1/3/1/8/131857211/weliwabofetox.pdfIn PDF document text
    • https://fekamudubop.weebly.com/uploads/1/3/5/3/135325245/vaparusubobel-toxuxo-taruridugumirur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489977/normal_5ff55771e47cb.pdfIn PDF document text
    • https://rixapuboxexegat.weebly.com/uploads/1/3/4/3/134348256/6874830.pdfIn PDF document text
    • https://kiwazavu.weebly.com/uploads/1/3/0/7/130776346/8334115.pdfIn PDF document text
    • https://lufavipipoj.weebly.com/uploads/1/3/4/5/134580953/e19aaa47df4da43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446650/normal_5fdcb5732878c.pdfIn PDF document text
    • https://kujazekomoduni.weebly.com/uploads/1/3/5/3/135315250/bidorigeset-zenitubemin-jazamakav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390069/normal_5fede95518804.pdfIn PDF document text
    • https://gewafikawesi.weebly.com/uploads/1/3/4/0/134016732/fugugovavipijobofes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suzujewa/38891139230.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/what_should_every_familys_emergency_preparedness_plan_include.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/concrete5_express_form_block.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc8544ad-319b-4b77-b3c3-bcf579c27ebc/99865784751.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/953771a3-1a46-43b6-9d1f-b94b8403963e/21412344318.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/hulu_live_tv_guide_update.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/rifleman_dodd_book_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/90274611152.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/44824031925.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_off0000ea30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA30 4864 bytes
SHA-256: 3468c229a592b35d452354c7674e5c8a089abf76aaf219a4cddcaf5d4df36c00
font_01_sfnt_off0000fac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC9 10664 bytes
SHA-256: 0a6f17454a68712b98dc66d0084a5387a8cf73ad788cd77ad785768f2be297ec

Open this report in the interactive analyzer, or submit your own file for analysis.