Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9285372e4354469…

MALICIOUS

PDF

39.3 KB Created: 2020-08-20 04:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14ef7a53c02f67153fb2f1f2d1b6ee95 SHA-1: d99f629239447d509b10aa0909d24a52461e41e3 SHA-256: f9285372e43544694ecdfec76ce9f062f32657f2fb73ad964b2772ed58038dd4
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, includes the text 'Backup android bookmarks to sd card' and the malicious URL, suggesting a lure to a phishing or scam site. The presence of PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics strongly indicates 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.com/pify?keyword=backup+android+bookmarks+to+sd+card In PDF document text
    • http://files.smithliving.com/uploads/1/3/2/8/132815054/fexowakusisexu-vifatiwukero-wakuwefi.pdfIn PDF document text
    • http://files.yloilers.net/uploads/1/3/0/7/130775635/3222012.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/1/0430/4338/9597/files/cartoon_video_tinyjuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijufetibumumupaxewaromuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/denapedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/via_dolorosa_sheet_music_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/42987615854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/84016243234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4737/8344/files/fopemazuzowebavibofoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/aptransco_ae_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/32607230485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/rifewizizalazim.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 1

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_off00005cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEF 5440 bytes
SHA-256: 9a49d9c1ac62f600ad356b34bf5e557d920f40167033eff6570f65f134a6f1bb
font_01_sfnt_off00006f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F48 9812 bytes
SHA-256: a588b0735705aea5b11c926652dca2d0ed4c72547d1e343e47d6a01ff75eebee

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