Malicious PDF — malware analysis report

Static analysis result for SHA-256 2233e6571451af36…

MALICIOUS

PDF

56.0 KB Created: 2020-09-18 01:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9d561d02c50e548a787efd692b95fbf3 SHA-1: 8802e7f3734fe17c06122674394579ec9f24f693 SHA-256: 2233e6571451af36c95cf09036cf81d4473a8c70f9b4089bc7a4decd7dc0827a
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.link/wix?keyword=subway+surfers+apk+all+characters In PDF document text
    • http://kewet.cornellactuarialsociety.com/uploads/1/3/0/9/130969627/rojikavugikilej-xavukoponupi-litix-vipewoduzafomom.pdfIn PDF document text
    • http://pexokobub.180prep.com/uploads/1/3/0/8/130813084/jipazigu-vobezeferulow-kadomumuxiw.pdfIn PDF document text
    • http://files.bluegreenandredconstruction.com/uploads/1/3/1/3/131379552/zivopedolamaferimal.pdfIn PDF document text
    • http://files.blackriverloghome.com/uploads/1/3/1/6/131637853/ligolavekej-xeruv-nigabif-zutobubetawepur.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/1/0433/4410/1544/files/90654522885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/92617532454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/timpanometria_de_alta_frecuencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/moduwimulisur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8292/4441/files/authentic_happiness_ebook_free.pdfIn PDF document text
    • https://a82946d0-21ac-472c-bd75-6ad81048dbe5.filesusr.com/ugd/909b15_f195c4345e02420f8984b3dd9f01324c.pdf?index=trueIn PDF document text
    • https://b2b820d6-e955-48d6-be70-7ac7bbc38681.filesusr.com/ugd/895bef_a4028786df1c4f69a198e0c831a74906.pdf?index=trueIn PDF document text
    • https://f3d07147-4567-4d22-9c81-1bd1eb60f9a3.filesusr.com/ugd/d5415a_2eb4ed633ad8491bb87218bf83b47787.pdf?index=trueIn PDF document text
    • https://4da5952c-9ced-4827-a350-417389e21408.filesusr.com/ugd/54fa57_81b4ae585cd9484aaa2c07a0422f4b98.pdf?index=trueIn 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_off000079e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E3 5224 bytes
SHA-256: 507b71ef2f99c8f34e471a0d1617be2293170255ddc743f5f9a3838f9ed191b1
font_01_sfnt_off00008bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD4 10408 bytes
SHA-256: 1fdb7e148fc328077a9258a1468207ad19da28f6ed9556d17b5711bdec5b645f
font_02_sfnt_off0000afac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAC 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
font_03_sfnt_off0000c474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC474 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.