Malicious PDF — malware analysis report

Static analysis result for SHA-256 da383656fac8ca31…

MALICIOUS

PDF

64.5 KB Created: 2020-10-25 03:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ed2aa9f3975c12ae4061076568a381e4 SHA-1: 7f0dcd3c17fb5fd0ef4217edce6704e9e417a3ce SHA-256: da383656fac8ca314973574d8c6acec4c229c80bed2d153d63a996ec2f06505a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the document is part of a link farm, likely designed to attract traffic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL and the nature of the heuristics suggest a phishing or redirection attack, likely intended to lead the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/strik?keyword=pokemon+dawn+vs+zoey+full+episode In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f87b410e1025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f8749f6831cf.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/fupewenawamido_zukexidemekuja_sonekixebeni_sekorej.pdfIn PDF document text
    • https://mivoxoxez.weebly.com/uploads/1/3/4/3/134340481/jixede.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/tixupoxepu-dovederitivize-seramajofeto-zolidure.pdfIn PDF document text
    • https://koxabiwepa.weebly.com/uploads/1/3/4/3/134309970/9751944.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/2840615.pdfIn PDF document text
    • https://sositero.weebly.com/uploads/1/3/4/3/134389363/sobure.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/d4a98fe1c.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/gofilafixu/gukuxinoxosinoxidolonev.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/nitovebufakuwaron.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/list_of_auto_components_manufacturers_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/77524041387.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/83001186968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0900/4952/files/10785606049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2885/files/download_apk_ome_tv_tanpa_banned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/formal_qualities_of_art_ib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f3abe78-87c8-4e79-ab87-c12c6ec1a2ed/wipilituteb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fb49468-a4b4-4f46-89ab-22abdf755e56/bozuxamekit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa5e714-5e86-47dd-bc58-1545481a83bc/cursor_on_screen_overwatch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f634bbc-e165-4202-8ee1-e46ff6216cb4/42640032246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad96ddd-3263-46c5-be2f-d4cac6ee427b/vinixebat.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_off0000beab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEAB 5460 bytes
SHA-256: 10739fed38efe03facdfb6c80a7272b41f4a50e8847710aadb4ed2afffa94d06
font_01_sfnt_off0000d163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD163 10280 bytes
SHA-256: 15249451223fc3bfa478cc9430bd557fe402dc7c6e523b7bf56a97a91924c760

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