Malicious PDF — malware analysis report

Static analysis result for SHA-256 4be92619db564c7d…

MALICIOUS

PDF

45.3 KB Created: 2020-08-03 11:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 859e7547f5212ebad5de6fdd912cbc3b SHA-1: 67c8e63ba49251283ff71fd2bc4947382646229e SHA-256: 4be92619db564c7d61c2cb0c95e027de4cac7bd5218becb8cbbc452ad1ec8bd2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=calendario+lunar+2020+colombia+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, and the document body is largely unreadable binary data, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=calendario+lunar+2020+colombia+pdf In PDF document text
    • http://files.gleimlight.com/uploads/1/3/1/6/131637553/wavogusekuwe.pdfIn PDF document text
    • http://files.kittsonskitchen.com/uploads/1/3/1/8/131856232/a37fa16fe42.pdfIn PDF document text
    • http://files.schematherapycanberra.com.au/uploads/1/3/2/7/132740408/3938424.pdfIn PDF document text
    • http://files.adamflath.com/uploads/1/3/0/8/130814432/2347615.pdfIn PDF document text
    • http://files.engineersinmedicine.com/uploads/1/3/1/1/131164424/zimotuwumonos.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/1/0429/6422/2101/files/31254018949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/kusupunenofifexomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2499/0887/files/tadawajab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25346701784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0946/files/reverse_a_singly_linked_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/44596227424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1396/3929/files/fijezejapuzure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/23910857414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/foxit_advanced_editor.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_off00005cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEF 5444 bytes
SHA-256: 15489ed014bafaca991f460bb098d586f5011d5ff0b5f21318953ac281383bca
font_01_sfnt_off00006f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4D 10612 bytes
SHA-256: fe1ab68ba0e400dd85d25089acf5ac01fe23713030f4f2af4b915d63b785ea65
font_02_sfnt_off000092cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92CC 16508 bytes
SHA-256: 46cab8332bfc4ecd06f2d76e10befdf00c75b90bc1fe9448badee8ab89e4e2c7

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