Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d12a54fc9b438d…

MALICIOUS

PDF

41.4 KB Created: 2020-08-03 21:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 074669b32d14122d05b0f8421cd2220a SHA-1: 224ec5aa0d66ebf841b2e23184bb627a7a57da27 SHA-256: 70d12a54fc9b438d374e9a01263e28623fab16a33a8b3014615ec06a299eacfc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary redirector URL, 'https://ttraff.cc/pify?keyword=libros+esther+hicks+pdf', is identified as malicious. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a link farm or phishing lure for free downloads. The ML classifier strongly indicates maliciousness.

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=libros+esther+hicks+pdf In PDF document text
    • http://files.decisivemomentsph.com/uploads/1/3/1/4/131454221/kokorosino.pdfIn PDF document text
    • http://files.shallyns.com/uploads/1/3/1/4/131437984/bf6c23c420f0.pdfIn PDF document text
    • http://files.liberarte.org/uploads/1/3/0/9/130969835/dapunole.pdfIn PDF document text
    • http://files.tarrantfatherhood.com/uploads/1/3/2/6/132695568/8504179.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/1/0427/5588/3175/files/68764845799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/maxomisop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/7000819739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/43048457414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/gevugidoxemivesuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1576/5148/files/zosomaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/ligojopegiwoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4314/files/pilogadejageli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9585/8083/files/17410250328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/mewedixag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1830/5179/files/dupajesifadatadonutomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/77113872948.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
stream_004_off000076ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x76AD 10152 bytes
SHA-256: de3c1c717e9e4dbd9b22c06cef98eba90e3b5b38bff3e41d546f3b2aec0bc529
font_00_sfnt_off0000652f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652F 5144 bytes
SHA-256: f2f9d2280b0627023e87a274a48cf38cf25b1ce55813d4a63bd2a54d0ff5fc8b

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