Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f2f71cd4858bb6b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-16 01:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe0d99e69ab0a79e9e3ab5cd15ff23c5 SHA-1: 901c618f20bf18b60224b0d45624573a7f6910b9 SHA-256: 4f2f71cd4858bb6ba328788edeb9719bfbc9ed1ab9c92f272150de39cdbddb6e
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, many of which point to a known malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=north+sydney+oval+sydney+pitch+report. The document body contains garbled text but also includes the malicious URL and several benign Shopify URLs, suggesting a link farm or SEO poisoning attempt to lure users to malicious content.

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=north+sydney+oval+sydney+pitch+report In PDF document text
    • http://files.changethenarrative.net/uploads/1/3/0/7/130738548/19b7229c1d9.pdfIn PDF document text
    • http://files.myrafayeturner.com/uploads/1/3/0/7/130775743/c5215484efc67.pdfIn PDF document text
    • http://jeboriwi.hartfordcitymission.org/uploads/1/3/0/9/130969502/buzukanepopilu_bupegasefafol_zobadizopezox.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/1/0437/5642/1269/files/zuduzepisikoxipotizapimat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/72868232063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3124/files/opm_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/35356103960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/20656190819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3155/files/neoliberalisme_institusional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/english_text_to_read_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/97933645259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/92200106070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/o_meio_ambiente_em_debate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/introduction_to_mechanics_of_composite_materials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9380/files/98240863361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/high_school_vocabulary_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6975/0944/files/cestina_express_1_appendix.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B2 5292 bytes
SHA-256: a878ead243107eee3bbef21cd9467eff8cfaaa394a21a37ffc10b063c2e2ec75
font_01_sfnt_off00007ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 9776 bytes
SHA-256: bc3788d1b0d615481ca299dcc391dba7a6fe9f82321138a58c07ad9067d26b84