Malicious PDF — malware analysis report

Static analysis result for SHA-256 2394741cd7e4250b…

MALICIOUS

PDF

45.7 KB Created: 2020-10-05 17:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b19c41c1854f2fabcd3a38b2b3343e5b SHA-1: 971ce92aeb37da769c5199a66f91f0442bc9ca99 SHA-256: 2394741cd7e4250bfe889f7d0b7dbbc3f3e5b54a8b5450eb820e4e7ad7d92bd9
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://cctraff.ru/strik?keyword=annexure+d+for+passport+word+format In PDF document text
    • http://monume.jambandpurist.com/uploads/1/3/1/1/131164157/rexavufaf_lesutas.pdfIn PDF document text
    • http://files.ohvintrkjam.com/uploads/1/3/2/7/132740638/1758371.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/1/0434/4735/3511/files/9517140102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0081/4998/files/word_power_made_easy_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1799/3877/files/wetil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9088/9889/files/34084159942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44f0704a-3c26-473c-ad9d-5b24dde3c015/4184749665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cef1d38a-bc1c-4519-aa22-70f2e48ea860/sipitapimetuxurisurewaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b9c7988-b4f0-41b5-9948-d65c54452d93/menuminomujavuliwininesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4593/6535/files/how_do_you_play_tchoukball.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8794/8693/files/art_exhibition_proposal_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6120/1064/files/after_the_night_linda_howard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1167/2733/files/cher_dark_lady_lp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2498/5497/files/zippy_loans_bbb.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 5304 bytes
SHA-256: b67c8684fddf153b741adfd243a8a3404e446b1ae8d484d6d4f88d592b809482
font_01_sfnt_off000073e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E9 9740 bytes
SHA-256: 3950c4844cddd786dc12b6911dd7eb8543160dc301c989edbff2c89514c2b85c
font_02_sfnt_off00009544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9544 16068 bytes
SHA-256: e7273338525a866f49bd556f13a0e46ce1e8513f85f175d9d987aa1f8b89adb9

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