Malicious PDF — malware analysis report

Static analysis result for SHA-256 85bc3a5aa52e622a…

MALICIOUS

PDF

43.8 KB Created: 2020-10-15 13:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0295775cbe16dd791d7d917a16580d2b SHA-1: 18c2afaa6b24a8c510a597675cc45377817be542 SHA-256: 85bc3a5aa52e622a3145d191422a2b9d55682c43867b9e01d2ea65eaa12af664
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://ggtraff.ru/123?keyword=shipper%2527s+letter+of+instruction+template+ups In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f8781a710e77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5f875a213a9da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f87bbcedff82.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/zadan.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/857734.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3355978.pdfIn PDF document text
    • https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/puvixerizewatul.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bamudepekepa_setumazowido.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/b444ca5d1fda52a.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/logape.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/9653445.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://cdn.shopify.com/s/files/1/0498/3455/7602/files/no_background_check_apartments_mesa_az.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9071/4019/files/lewokopabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/sodifokukular.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/manorobivaboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1510/9312/files/azur_lane_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9294/4058/files/kung_fu_uniform_amazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9425/4771/files/65855433897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9795/9837/files/ps_vita_specs_vs_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9851/2803/files/64237323667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8560/6296/files/jodamogedige.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_off00005f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6E 5272 bytes
SHA-256: bd905ff2b94198aef01cbd8235cf2fada5a69d649a2efaa1165f011362ce66f6
font_01_sfnt_off0000712e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712E 9972 bytes
SHA-256: 6760bd0374891b407d36b717b130dfda97ac2b7d8e30c0ac4e5f32836174827e
font_02_sfnt_off0000934e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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