Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e76596ee4b43ddb…

MALICIOUS

PDF

48.8 KB Created: 2020-10-14 00:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c6bbfb80f6acee3e3f546edf301c0035 SHA-1: ede40e229a6802fa93ee5123f6683a129568a7e9 SHA-256: 7e76596ee4b43ddbe187259df31f2b0a38d7913422508d1a4e5ae0f7bbc4a9f8
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://cctraff.ru/strik?keyword=hp+envy+7640+instruction+manual In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/36ce75ac.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/f9007.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c3fc2f-2d86-4407-9236-eaa8aff30dca/bigevepuzupexepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f5f974b-dfba-4775-add0-b98a5582e923/57360613713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20dc51a5-122a-4544-aac0-ca6d6f0d7432/21981614629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cbb2af1-fad4-4b83-bbac-96908822cd63/67968859631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7feb1b2-eb7f-4392-8a55-cae5bb513b30/80056950273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebbaa82-a139-4184-a9b7-ee5309c3f70d/42844908075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e5676d9-d679-4e5f-80fa-64fb0ccef322/pevezogijuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b423b48-e911-44d0-aaca-3b025654b36a/41378608471.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6704 3724 bytes
SHA-256: ce22c8eaa1f53a77d563481fc3f0abc202627ce0e69ac912df19b60822d178aa
font_01_sfnt_off00007441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7441 5664 bytes
SHA-256: 2fb5ea860773b9c53dbc3102b24e6c8499e7dfb5801787c4a437c8cf9afea84a
font_02_sfnt_off00008773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8773 10860 bytes
SHA-256: 0d1c21b46e94e6caaa3b8fe2627548f9b3d251a7264e8dce41c6cf450aeb7c96
font_03_sfnt_off0000ac13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC13 2148 bytes
SHA-256: 65e46f28deb0e7f216138687e35cf0520dbea177115bfb6309ddb8e4bbf8056e

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