Malicious PDF — malware analysis report

Static analysis result for SHA-256 22244ed6740b87aa…

MALICIOUS

PDF

44.9 KB Created: 2020-10-19 13:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: a3c71e0c431ff630708dfe95083f6dab SHA-1: 199228aa18ea4d07a031859b918b87fadfbd7a89 SHA-256: 22244ed6740b87aa89fcbecfb2d66b85b1ade4bb8f51a787b9cd7034dfadf568
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.club/123?keyword=best+video+calling+app+android+and+iphone In PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/duduwoxisumijetatot.pdfIn PDF document text
    • https://wovasemuzusalej.weebly.com/uploads/1/3/1/6/131636629/291010.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/1/0481/9461/7498/files/japan_to_english_translate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/dozuburadon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6575/9675/files/zojitojokar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5155/6260/files/gelapipawuwevup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/fight_song_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5111/3371/files/deterrent_theory_of_punishment_case_laws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2030/3006/files/77138004351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9333/4456/files/81068959869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6948/0866/files/the_wagon_store_discount_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2294/8264/files/how_long_for_turtle_dove_eggs_to_hatch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2064/6048/files/buzovuwewusevokad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/036c289c-38cc-44cf-9874-ff7d6dfd8c75/ruliwudagediwilul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e876399-e0e0-4487-bedf-0aff0de0d225/58806274639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13185e6c-4549-4c45-be09-935f34f30ed6/fufonomoraligenilalima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aed1250e-5b1c-4a1d-bb33-8ffffbbd222e/assassin_s_blade_sarah_j_maas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0407f9f1-43a2-4fe5-8b02-d60bcbc864ac/16003967090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3227/5865/files/81840673292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2410/5115/files/non_verbal_communication_techniques.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_off000070c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C5 5444 bytes
SHA-256: 0b742b9023384daa3882cff3029039adca98dcb5e322080c0a15037f8fedb63a
font_01_sfnt_off00008343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8343 10296 bytes
SHA-256: f978cc2319496aca0594ceb03732eb18f0bb29ceb8fafc54a8962e2830ac8bea

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