Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a2eacafd4c2f0f…

MALICIOUS

PDF

43.6 KB Created: 2020-09-19 13:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: cf058786c00e1057293367581daf9e07 SHA-1: d9efe25927b09ec1f6dcfddf37dd57384c392ca7 SHA-256: f9a2eacafd4c2f0ff601c4e605fe9e33140a40fa1eeb5b55b8d6ec4c0b9021cc
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/wix?keyword=bella+cucina+toaster+oven+manual In PDF document text
    • http://nebuxuzo.fergil.com/uploads/1/3/1/4/131407089/6259114.pdfIn PDF document text
    • http://files.nhpond.com/uploads/1/3/2/8/132814166/34b70cc34d9.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/1/0432/9019/8180/files/duzodere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1156/3932/files/a_aware_se.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/15156883899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8911/5801/files/58601755440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2500/6491/files/23158940468.pdfIn PDF document text
    • https://b19a2bbf-526f-4e42-b29f-7c98a2624df1.filesusr.com/ugd/b98abb_1c495dc8b77a4aa3861ea446e36e2af8.pdf?index=trueIn PDF document text
    • https://80883516-7f3f-4b53-a8f7-90e01de12be3.filesusr.com/ugd/c722c2_98083212584a43f398ad5398bd162ecb.pdf?index=trueIn PDF document text
    • https://0b21038f-6b52-4076-a7b8-2936a9c8a052.filesusr.com/ugd/c12414_a96f28ffb3974e4ea9f49f04a4a7038f.pdf?index=trueIn PDF document text
    • https://6bf0e24d-d8a4-45f6-b3b4-b47fd2809f77.filesusr.com/ugd/abd6ea_413debf403ed4d5f8bc8f1b069206b05.pdf?index=trueIn PDF document text
    • https://b5bbc812-531c-4646-b8e8-6a8768ba232a.filesusr.com/ugd/9ea91e_e3b021e2970c484bbb81374d78b1dce6.pdf?index=trueIn PDF document text
    • https://09b11c40-32ba-4523-b75f-7a0b4b788f1b.filesusr.com/ugd/ef253e_7114ef5e45cf4cf28021d581770e7f67.pdf?index=trueIn PDF document text
    • https://c9009232-d0f1-4cd2-be72-aac0c8b6674a.filesusr.com/ugd/a31856_e8319fb7a9884f689cd8f4742473f66f.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D53 5052 bytes
SHA-256: 76b8ac57133031dd1fce7ea05c298e9b123cde8ed2d6fd7b37d91faeea57e8ab
font_01_sfnt_off00007e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E77 10436 bytes
SHA-256: 0e7bee506075463d255320a7cf9f87b2594188f8e7b5cae0a65a5e7f3ba07352

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