Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3080fde422c7211…

MALICIOUS

PDF

71.0 KB Created: 2021-02-17 02:44:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2906dfc0e4742d17ea7159c91c708b7 SHA-1: 34153806ee4bf67444feb3d03aeb7172b6a17d0e SHA-256: d3080fde422c7211b231db544d48491cab70c136aa7d9abadade22c27680864f
222 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a link farm designed for SEO manipulation. The presence of a visual download button further supports a deceptive lure. Although no scripts were extracted, the embedded URLs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yafferge.ru/strik?utm_term=what+are+good+personal+objectives+for+work
    • http://wildboost.club/bees_saal_baad_movie_1988rfw5k.pdf
    • http://prizinsta24.space/ssc_stenographer_2018_form_fill_upazaqn.pdf
    • https://mujolimu.weebly.com/uploads/1/3/4/8/134868529/rupeba.pdf
    • http://nout-sale.site/corporate_governance_kotak_committee_report5zw7y.pdf
    • http://help-ruleviolation.com/nikazutuxojazinorcks53.pdf
    • http://everydayy.fun/exemple_attestation_formation_internemi2cx.pdf
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/zoxixifupag.pdf
    • http://bathforlegs.xyz/6550193817rxx9m.pdf
    • http://br1.red/management_reporter_process_service_won_t_startttxah.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/borokegujuzero/wumunisajob.pdf
    • https://s3.amazonaws.com/lerezazo/label_format_template.pdf
    • https://s3.amazonaws.com/jujadodedaruxix/vovase.pdf
    • https://s3.amazonaws.com/towutoginadivu/laurent_perrier_cuvee_rose_tech_sheet.pdf
    • https://s3.amazonaws.com/zinudipir/queen_platform_bed_frame_ideas.pdf
    • https://s3.amazonaws.com/rijaliwiguvex/18186371285.pdf
    • https://s3.amazonaws.com/xaliwalufoguni/4808083858.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7eb.bin
63c19817c0f2481dcba0048975276c90adeffd943996b2882c353d35c5aa7296		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EB 5860 bytes
font_01_sfnt_off0000ebf8.bin
30e177e23c80a02363919dc4689e59b24de485c3a713081ef54ae6759148c18a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF8 10264 bytes

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