Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec2f961ff8e4408…

MALICIOUS

PDF

43.9 KB Created: 2020-10-03 01:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b0fa5ab0ba46035e1ea4e0104f1c7ccc SHA-1: 2c23d56d5895eb7a15a98cffb9a02813c143347a SHA-256: 7ec2f961ff8e440882b364444285ed6fb835c6d676a5a9e174dce1684e7d9583
194 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.cc/pify?keyword=mouna+guru+movie+review In PDF document text
    • http://files.riverbendheritagepoultry.com/uploads/1/3/2/7/132712206/banede.pdfIn PDF document text
    • http://rilan.annettetammart.com/uploads/1/3/0/9/130970004/viteb_retom_bofozapi.pdfIn PDF document text
    • http://denopax.anchoredrosesoap.com/uploads/1/3/1/0/131070374/luloze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/75a01f3d-6566-4fc6-b1c5-b0c447fe5dd0/rolexubagonodikeguxuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3250f2d7-d532-4c64-8e8f-e9af6fc27195/ligutulorirojowige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6eb13b7-c455-412f-8b3a-fc913e363039/deterivam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ef474e7-75c8-4e41-9983-e83ed19e9635/9269203436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c73518a-e161-45ad-b2ae-f5a788bb69e8/58935266422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c40bc3c-1eab-4f5b-91a6-c0762f5f6f39/vodejejupunedew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12ec4d4-6dd3-435d-86bd-968c0f5922a2/wiwizefibidememakewomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff84d85-c85b-4b72-88f8-cba1ab4156ad/96710663409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2f72c4f-48e6-4779-8630-618d9028e155/xonerinefidepugovifemep.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 4756 bytes
SHA-256: bfcf480cc50cc36cd952edbda0efe404a121c173c413ba1dd3d71dbb5758ee58
font_01_sfnt_off000072f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F8 9980 bytes
SHA-256: be45262eb5a3a75788dda3920187177252b115bdf29a1ce2960d46758804af6c
font_02_sfnt_off00009514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9514 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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