Malicious PDF — malware analysis report

Static analysis result for SHA-256 da6849e42458b5ac…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 03:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dcdf274ca3e47584f5dd9028952fbad4 SHA-1: b4e1873eb0c096d49b5c450e1b9db18f0b44e755 SHA-256: da6849e42458b5acac9c40d3ee02d8be74ba6217a60722a37393dd5b236eee51
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that appears to be a lure for translation practice sets, which redirects to a known malicious infrastructure. The embedded links likely serve to distribute further malicious content or lead to phishing sites.

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/pify?keyword=bengali+to+english+translation+practice+sets+pdf In PDF document text
    • http://pubefe.alisonpeters.net/uploads/1/3/2/6/132682883/gogezusexupax.pdfIn PDF document text
    • http://files.southwatercommunitycentre.org/uploads/1/3/1/3/131378993/81c65b5493.pdfIn PDF document text
    • http://files.cedarseast.net/uploads/1/3/1/6/131637606/musufad.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/1/0440/8098/8325/files/nintendo_ds_roms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2646/5436/files/35309407570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6583/4649/files/743_bobcat_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/zinanunepixeramatuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0701/6103/files/ruvojukixexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9850/4354/files/ridusudebigisujuxowisiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3520/4511/files/druid_tree_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2699/5621/files/telugu_kathalu_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/all_discord_fonts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/wumubedajan.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 4

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_off00005cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB9 5468 bytes
SHA-256: 2e806788d72923682062982b889e3f712941ebb2c99ad34883dc32a02ae85a35
font_01_sfnt_off00006f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4C 5288 bytes
SHA-256: 240d41ffbef210203b529f9d6ce6ff76e3ff31c3b09d6c0a5da3a197c2dbe803
font_02_sfnt_off0000808f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808F 11400 bytes
SHA-256: 8a8629aa6a27910cec07cb78230819074f3e58437074e40eeb499f38e07facc4

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