Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeac189c370fafc8…

MALICIOUS

PDF

42.4 KB Created: 2020-11-07 20:35:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 19fb3f98c2a2ef993634ffe93d040795 SHA-1: 9f8235d10db96abe58c3cc2264fae2204ef85c79 SHA-256: aeac189c370fafc853f8c56d35b302f8388354d72ff09648f575ba58ce5970c7
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafffi.ru/aws?keyword=poulan+pro+42cc+18+chainsaw+parts+diagram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5f8921c53f830.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/6981490.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f8d3e904cf01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420018/normal_5f97ec583015d.pdfIn PDF document text
    • https://kaginugopaz.weebly.com/uploads/1/3/4/3/134310825/8904142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f88472ee8cdb.pdfIn PDF document text
    • https://tigizojotajubum.weebly.com/uploads/1/3/4/4/134489046/4d039b1.pdfIn PDF document text
    • https://xepajozojiv.weebly.com/uploads/1/3/4/4/134476610/zulafadan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://saridejawe.files.wordpress.com/2020/11/95057248726.pdfIn PDF document text
    • https://fimazibido.files.wordpress.com/2020/11/bihar_board_10th_result_2013.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_off000062aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 6044 bytes
SHA-256: ed6ec932780abfebbc4f71fa54926588806b1be18221fcd9a56921d466ef8c63
font_01_sfnt_off00007732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7732 10904 bytes
SHA-256: 9a7d7d312b3e8a8a05eba2333c5edd9600054f4472b872cd5b9f2e08881adb70

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