Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef8cbaf728c9060…

MALICIOUS

PDF

46.2 KB Created: 2020-08-12 20:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 227c5986e085980fd41c58930924ddbe SHA-1: e5627de90e00537b2cd3a3a5105cacaab560d486 SHA-256: 6ef8cbaf728c90602632c2f64a63cfc21e55728cfe840142fc797926d09f22e6
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including one that redirects to known malicious infrastructure at `https://ttraff.cc/pify?keyword=calendar+of+event+2020+indonesia+pdf`. The document body and heuristics suggest a lure for users to download content, likely leading to further malicious activity. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=calendar+of+event+2020+indonesia+pdf In PDF document text
    • http://files.annmackowski.com/uploads/1/3/2/8/132816066/katitizowexip.pdfIn PDF document text
    • http://files.leewen.republicofdaydreams.com/uploads/1/3/1/3/131384127/bedewe.pdfIn PDF document text
    • http://files.magiczwork.com/uploads/1/3/2/3/132302924/lidamajuk.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/1/0435/5883/0231/files/wujowumadiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5802/8959/files/mizolisutegevujaparejese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/25398934830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/60780249240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/the_new_oxford_picture_dictionary_english_spanish_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/winoxilerudizixadejugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8219/4847/files/10249514234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4071/9516/files/rudenetusaxedaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/basic_automobile_engineering_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/scac_code_list.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 3

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_off000076d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D8 5272 bytes
SHA-256: 7a57aa1b82c0e7ccdd8d3d48e05e64ab7804a9e7a18c8d820ecc451b36ce5e76
font_01_sfnt_off000088d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 10324 bytes
SHA-256: 36283c29dc7638e3f6203e4cf76e65156e8ed3bed53f22f9ee7076e75cb85724

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