Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb6ed8378b1f17dd…

MALICIOUS

PDF

37.3 KB Created: 2020-10-15 16:33:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: aa3f4957f617b983ceac31a49ce34c71 SHA-1: f0e6a886749fbfcf6ae032e516649109178a7879 SHA-256: fb6ed8378b1f17dd8a294cf111c7d5d76587babe1322682222726b7fd0a7739f
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=imci+chart+booklet+2020+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f871bdf2242c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f871077a826b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f87774120d26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f8775cc63d2e.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/wuloxogujot.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/4542247.pdfIn PDF document text
    • https://site-1043793.mozfiles.com/files/1043793/xoxokenunolasogusa.pdfIn PDF document text
    • https://site-1038460.mozfiles.com/files/1038460/fixuxuxakikumazidab.pdfIn PDF document text
    • https://site-1038971.mozfiles.com/files/1038971/vobevuvi.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/tunitulo.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/819987.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/2c029f.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/tober.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/1/0477/3029/4940/files/batman_vampire_graphic_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2871/0041/files/which_of_the_following_would_enable_a_firm_to_hire_the_fastest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0079/1715/files/pix_city_unlimited_mode_unblocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/bpa_regionals_2020_results.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6839/files/mutilate_a_doll_2_no_flash.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

Related samples 8

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_off00005488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5488 5632 bytes
SHA-256: 0e30d4e98ad5bfeb1b0a5a12898a39ca08a0dff5d829e630b4bee0b4a2b08b1a
font_01_sfnt_off0000677e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677E 9536 bytes
SHA-256: dbdec87a4adb325077c5df87314b6a45af3633abd945e12fc703ac0c3b15b564

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