Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1ed60daf666ac6…

MALICIOUS

PDF

50.3 KB Created: 2020-10-28 09:46:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: feaf723d2aad3584dce6057205aac403 SHA-1: 43cc3d2323ac9db2325d74e44e8d8a0f97020304 SHA-256: 0a1ed60daf666ac6dee485b8a71aa3f8c5ee77b28919dc23e59e567a9d446af4
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://gettraff.ru/pify?keyword=marquette+acceptance+rate+2010 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385617/normal_5f96767e95995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f8aee5157606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f8db3babca38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5f97d6cca70db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369322/normal_5f947af66815e.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/48455.pdfIn PDF document text
    • https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/1359344.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/ritiluxiditupofuvod.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/vutaduge-kerobubojibi-gilapa-kotini.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/20091637057.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/79823618877.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/convert_to_dwg_in_autocad_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/lekises.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/dictionnaire_anglais_franais_informatique.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/alcohol_and_its_effects_on_the_body.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/62696519450.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/berserk_manga_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/letanunodijiwadanew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9315/0875/files/shakespeare_macbeth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/71702269482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/35070201757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5255/6184/files/download_font_for_android_phone_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0983/3627/files/canon_powershot_sx150_is_battery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3670/3385/files/xogunuzaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7981/0203/files/chronological_order_worksheets_first_grade.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_off000082cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CB 5176 bytes
SHA-256: c31a844f496c675f50a03ea094d30a9cb17311d6d6fa407882baf424881579b2
font_01_sfnt_off0000947f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947F 11496 bytes
SHA-256: 0c2ce2105e43876851e9502b3762877a775666a4c5def0663045ef31aed6e638