Malicious PDF — malware analysis report

Static analysis result for SHA-256 52bdfd26c113c145…

MALICIOUS

PDF

57.5 KB Created: 2020-08-10 02:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3452faadfe96e46f17ab322e4522beb3 SHA-1: ac9d31e14bd69be7c572d9b3566742ff9eb5b5a7 SHA-256: 52bdfd26c113c145878e76440a41479cb6366e336bc968149af2a17a73f8fc0a
194 Risk Score

Malware Insights

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

The PDF document is designed to appear as a search-engine-optimized resource for a 2020 football calendar, but it contains a high number of links to external PDFs hosted on various domains, including a known malicious redirector. The primary malicious link directs to 'https://ttraff.com/pify?keyword=calendario+mondiali+calcio+2020+pdf+da+stampare', suggesting a lure to a phishing or malware distribution site. The ML classifier strongly flagged this PDF as malicious.

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=calendario+mondiali+calcio+2020+pdf+da+stampare In PDF document text
    • http://files.pearcemustangstampede.com/uploads/1/3/0/7/130775403/9283060.pdfIn PDF document text
    • http://files.rwfell.org/uploads/1/3/0/7/130776257/perixudopojilil.pdfIn PDF document text
    • http://files.la-enthusiast.com/uploads/1/3/1/3/131381428/jesidelitujog.pdfIn PDF document text
    • http://files.allaurensamanthaforbes.com/uploads/1/3/1/4/131454791/6657593.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/1/0431/1423/4017/files/suwifinix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/bopeludobikesimegakusal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/26755140998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/81921608270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/26628307676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/83314764884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1298/7802/files/44829145118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/atomic_structure_class_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7122/files/wiwilarojilugorugumufemok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/wusopubogabizubejegikote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/fusionner_excel_vba.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 8

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_off00009841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9841 5480 bytes
SHA-256: 5483f9149136f4d6d32cba36579e891d9639c151728eb248f437f6df447e3509
font_01_sfnt_off0000aac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC7 14696 bytes
SHA-256: bfe20c14904a245f3d7283c7acd011eac1278c12ab3bc0c5b59a9638de15d017

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