Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2395103efbedef4…

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 14:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 528d55cb2914550cf367e67e91dc0095 SHA-1: 384e3ca1e5ba9de6dc698e7c1278845eb6dc67ed SHA-256: b2395103efbedef4a8c848b7c2c5a7505a13e8007c14bbb340cfda1060a1267e
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=filehippo+pdf+software'. This indicates an attempt to direct users to malicious infrastructure, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'filehippo pdf software', suggesting a lure to trick users into clicking the malicious link. No scripts were extracted, and the primary malicious activity observed is the redirection via embedded URLs.

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=filehippo+pdf+software In PDF document text
    • http://files.verbindendsprekenmetpsychose.com/uploads/1/3/2/7/132712214/vixigemifeleto-godusukakafeto-matabiri.pdfIn PDF document text
    • http://files.novushwc.com/uploads/1/3/0/8/130814124/jenajadasiwumu.pdfIn PDF document text
    • http://zogego.callanjames.co.nz/uploads/1/3/2/8/132814930/2df2b925d9ddc.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/1/0435/7075/7791/files/gunarizugaboruwime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/93337454512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6374/6465/files/75137440532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/gezuxugewesakurepusovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/67481194305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/vuwejabovajamalejigegosad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7784/2584/files/xudarofaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/50945547989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4278/9786/files/whatsapp_karna_hai_kaise_hoga.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_off00006015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6015 5176 bytes
SHA-256: 0a9fc75e593152bba9d94b84a7afc50909d711f28ddddf7aa843ddf9454732fa
font_01_sfnt_off000071ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BA 9992 bytes
SHA-256: a2cdcbd1a2c8b232a1f09361774d2280525856b85e979d1aa3b5af7e4a0ce29c

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