Malicious PDF — malware analysis report

Static analysis result for SHA-256 be466828009d22b6…

MALICIOUS

PDF

59.9 KB Created: 2020-08-25 08:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 83fc12a177fd7455059e5886c626f98f SHA-1: 3d277f22a2d62b69ea3838a664dddbd8f4492066 SHA-256: be466828009d22b6c0517cc4c0d27c5acf0ca84b5967321ac30cd43b717cd453
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.ru/pify?keyword=manfaat+innisfree+sheet+mask+ginseng In PDF document text
    • http://foxodixi.thestrengthstudio.com/uploads/1/3/2/3/132303382/93cc81.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/1/0427/9648/2727/files/athlean_x_max_size_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/game_aoe_1_gametv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/miniwibatuxop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/kewuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9689/8724/files/beneficios_da_biomassa_de_banana_verde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4606/0710/files/tosexagigidak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1826/0377/files/fairy_tail_season_1_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/probability_random_processes_and_queueing_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6074/6648/files/blood_type_diet_food_list.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFC 4896 bytes
SHA-256: 0b94139314da66ee195ef3d0d20c6f263b28bb1e1e91dddf57fafcc0b858518d
font_01_sfnt_off00007d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5E 1952 bytes
SHA-256: 3f2ce2d979b81614d089de1b14f9f3dd670f7a5e49bbd6cf1a199f19e29dc309
font_02_sfnt_off000086c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C5 21224 bytes
SHA-256: 75cbb7205dde4e9b613f7a1d5c49192c1cbc766f8056f13858ce6c05d53075b8
font_03_sfnt_off0000be67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE67 16204 bytes
SHA-256: 514ec34c774379c82780ce3b826aceada3291152a2a4734d997485cf707bbc49
font_04_sfnt_off0000d3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3