Malicious PDF — malware analysis report

Static analysis result for SHA-256 56003daabb7922aa…

MALICIOUS

PDF

52.1 KB Created: 2020-10-16 08:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 80ed03b6bb0af917697cd84f74e6cfd6 SHA-1: f7756cbae4cec287a9f235449b948fcbdf08615f SHA-256: 56003daabb7922aa220b823825bab22a4e7094df9abce18f085c7508dda3181f
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/pify?keyword=tinder+gold+mod+apk+august+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f871036b69e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_5f891384e16d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f891e20a2236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f874e324d8a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9153/0406/files/vogamom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8095/7083/files/snug_as_a_bug_broken_bow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6719/7590/files/givajobopukodupodegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3795/7537/files/mass_vs_weight_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9461/5238/files/83951649858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8116/3435/files/coral_reef_webquest_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/3271/1846/files/somofexosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/amish_furniture_houston.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2392/4885/files/lord_of_the_flies_discussion_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8bf1d86-df34-46d5-be42-939fe51249f8/60807155198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5961b846-bc44-4578-8514-5930376fceb1/gukobujikol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc87270-548b-4cbb-86b4-a2705bee9cb3/xilulawisudujoziwinagizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63f0c582-9b0b-4c7e-ad3e-f44d38e63e0a/30244126030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b969d7a-8d50-48c1-87af-a903adc85f41/75166844507.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD2 5564 bytes
SHA-256: 0e2767fc72a408fb30ab0df57f7bad5e88e86621e488fd03b055cc45b46d1992
font_01_sfnt_off00008098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8098 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00008926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8926 10468 bytes
SHA-256: 4f1ca79d4ae8dd691e6f890ed06ed1647ad3d4df78a029ea095633fb94798fed
font_03_sfnt_off0000ad41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD41 16080 bytes
SHA-256: 4862f0796d5cbf2b429715f2b47f15d06f0c641f927a022d27f217f4f39910ad

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