Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa6e5c56807bc49…

MALICIOUS

PDF

37.1 KB Created: 2020-09-30 09:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 82766886cfa4c7ee77fa8b22b1340b4c SHA-1: 1a680c9de96f0b3ad374bc05e2dd8857c32601db SHA-256: 2fa6e5c56807bc498d8b0671fdc87edf2c01c5c02a1d5720299781b7e0bfe7cd
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/strik?keyword=cambridge+primary+english+book+pdf In PDF document text
    • http://files.thistlenthornfloral.com/uploads/1/3/2/6/132681823/1492844.pdfIn PDF document text
    • http://files.colabsunnylin.com/uploads/1/3/2/6/132682723/tabeviko_rizuwivovus_sizunijegetav_lovixizalodup.pdfIn PDF document text
    • http://files.goldenfleecefarm.com/uploads/1/3/1/3/131398193/medaniwovu_jonez_fawizetufoxifa_bojigafavozu.pdfIn PDF document text
    • http://files.creativeedgedancestudio.com/uploads/1/3/2/6/132682076/vufuzenotaf.pdfIn PDF document text
    • http://files.m4achic.com/uploads/1/3/0/7/130775429/2424981.pdfIn PDF document text
    • http://files.troop502iop.com/uploads/1/3/0/9/130969408/galawudaf-fisojidowulem-xijibosesanozo.pdfIn PDF document text
    • http://tolimenit.makepaducah.com/uploads/1/3/0/7/130739059/e235f22.pdfIn PDF document text
    • http://semodor.austinbottledwaterdelivery.com/uploads/1/3/1/6/131636947/nomomunopiwis_gumajegasala_nutixaz_fefozu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9167/6321/files/billy_idol_discography_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/robedegini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/tinaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/zulijevejikaxesesopesox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/divawulokegupufix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1773/2249/files/mamogenesis_lactogenesis_y_galactopoyesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6911/1449/files/avril_14th_piano_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4913/8846/files/fivijivupepatitalufunit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/gakozekotowerepox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/5571855796.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 7

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_off00004865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4865 5492 bytes
SHA-256: 975311e37a2744aad47a63363b7c5da58a1f7c28369ed9a90066fd751ec9aac8
font_01_sfnt_off00005ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADE 8872 bytes
SHA-256: d1996bcf88ab80e6bd5b50fdfc931db43555fa9302396298487d905c3262d5e0
font_02_sfnt_off0000792e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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