Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4bfd25479e2ef9…

MALICIOUS

PDF

44.2 KB Created: 2020-10-15 01:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 917057001731ac947d4fe1a9732b8f21 SHA-1: eece0ff394d5b9bae794af0e8998b84b22e8cf84 SHA-256: 2e4bfd25479e2ef9c3f401101a9fc455c410f805bcb7447da653b9459a4c5918
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=navigation+gestures+android+apk In PDF document text
    • https://site-1043620.mozfiles.com/files/1043620/gegafutedefabuj.pdfIn PDF document text
    • https://site-1043475.mozfiles.com/files/1043475/gakan.pdfIn PDF document text
    • https://site-1042890.mozfiles.com/files/1042890/bmw_5_series_owners_manual_2020.pdfIn PDF document text
    • https://site-1042271.mozfiles.com/files/1042271/8537941161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f872f2b7a434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f876f25b2113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8772e14e47b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f876d99ea943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8770ad43351.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/sepavokokadudivazo.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.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/1/0433/7182/3262/files/kaiser_medical_release_form_california.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3369/2830/files/sedixoxemenibonujupav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7874/5756/files/bein_sports_connect_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/566bd1ff-8f18-471b-9a19-97f3f0fd988d/96181723317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7460a61b-3e83-41df-bd5b-263b73ea12af/9760093877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/823edab8-f15d-47c6-92b0-ee26ec71670f/62190237143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/955d5bed-abec-4392-9a26-3a734ac8901e/ladejajosekonivisufak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6798e1a-2302-4114-b731-4bbcc892838b/83519268308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7391/1963/files/polar_115_emc_monitor_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1462/6717/files/cousins_child_to_me.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_off00006e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E85 5188 bytes
SHA-256: 16c5708d4dd961353166c8c1345d42942d806bf17f66a7f5382fd4f6baa9b861
font_01_sfnt_off00008049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8049 10588 bytes
SHA-256: e158d66273ade19534c477119aa8ec059a5572bf5593504af33a67d70ec96a40

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