Malicious PDF — malware analysis report

Static analysis result for SHA-256 1533f5f3f84de5c6…

MALICIOUS

PDF

60.0 KB Created: 2020-08-12 08:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24dad293d811e24019e3976c6ee26ec6 SHA-1: 3669f26ef54d137bed11b69072d0c260433baf75 SHA-256: 1533f5f3f84de5c61c9e1f104033b4fd8bc407ef9be39a79e39d8c1de073aaa3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) and a large number of SEO-optimized PDF links, indicating a link farm or phishing campaign. The ML classifier strongly flagged this PDF as malicious. The embedded links are designed to lure users to potentially malicious sites, likely for malware distribution or credential harvesting.

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.com/pify?keyword=amharic+dictionary+pdf In PDF document text
    • http://vumuk.jeffbeatman.com/uploads/1/3/0/9/130968984/33e1e44d4.pdfIn PDF document text
    • http://files.sixdegreeswriter.com/uploads/1/3/0/9/130969885/bimasi_nipebapunog.pdfIn PDF document text
    • http://files.georgetownnewcomers.com/uploads/1/3/1/4/131483386/dada360c7116.pdfIn PDF document text
    • http://files.ekk-electric.dk/uploads/1/3/1/4/131407492/desidarejo-vefojumerenoziv-boratuvomatowar-lupemegedabofi.pdfIn PDF document text
    • http://files.greengallerync.com/uploads/1/3/1/4/131437457/tesedenebilazutojefe.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/1/0432/0185/5646/files/mituzolewiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/ctet_ans_key_july_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8501/2900/files/bankable_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/7440190725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1379/8050/files/nupipesuvulasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/wexitenugozazimolifojonak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7081/5397/files/88278128916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/70910799613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/book_of_azathoth_tarot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1382/files/mignonne_allons_voir_si_la_rose_hatier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/rigibozebuladalofinerusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/boxoxujivig.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFF 24376 bytes
SHA-256: ecbdd00b317a743b62f739150ad634cf8055f7ef78dfa98322733116574730f0
font_01_sfnt_off0000ad77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD77 5276 bytes
SHA-256: ee95612dcf713791f3f5e25d498f255b32646c1b0706b362879910bff3b42115
font_02_sfnt_off0000bf41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF41 10276 bytes
SHA-256: 55213eaacba41e96a09e5ae69ea3035849b7fde39333bdd3981392d7f8c3cd66