Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27bb4a547420731…

MALICIOUS

PDF

52.4 KB Created: 2020-10-28 05:55:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 48de5209660c823843ebcbc466e91f41 SHA-1: 3a377a6f582daaa3d829244a9fe9bdf80a0f8e6e SHA-256: e27bb4a54742073161d323f9d94ec547d5afbc78387cbbf743c7afc6a2a4c374
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/pify?keyword=aroma+professional+rice+cooker+10+cup In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f9437ad7bc6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_5f8d9a4a107c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f8ca35ac97a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5f8e0b0a35644.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://uploads.strikinglycdn.com/files/7dcdf30f-55ee-43cf-823f-a34dd35273db/72159145032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30421621-a111-454f-a5fb-88cf959e56b7/99407397141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/vorifavib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8914/8098/files/bokowiraxenoter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5091/7784/files/cube_escape_paradox_capitulo_2_apk_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6505/7695/files/parent_functions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7727/6326/files/faster_internet_2x_1.5.3_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/savapimazepesedidalazonit.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/gevaguvelevosulixaz.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/cabling_network.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/72553115563.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/xepisaxejag.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/axenic_culture.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/edexcel_ial_chemistry_data_booklet.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/25779052748.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/bangkok_train_map.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_off00006ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC7 5208 bytes
SHA-256: 46428c23d4c045c4fbc922ff88b08ddc4605f842bcc121c7691b092d380cd122
font_01_sfnt_off00007c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C61 10472 bytes
SHA-256: 3ad552fa5027f6ad55e615363064e525011f92f5de032a7037b0ee766476766d
font_02_sfnt_off00009fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE7 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
font_03_sfnt_off0000b515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB515 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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