Malicious PDF — malware analysis report

Static analysis result for SHA-256 435659d550150681…

MALICIOUS

PDF

48.5 KB Created: 2020-07-30 16:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8681839730f858476b4098acac5f2960 SHA-1: fdf984a666d83acd5bd71122c9c40314e1e643f9 SHA-256: 435659d55015068193eae721f086fe6280a5eae9b8df0c8eafc3848f8358b800
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified as a PDF link farm. One of these links points to a known malicious redirector infrastructure. The document body appears to be obfuscated or corrupted, but the presence of numerous links, including one to a malicious redirector, strongly suggests an attempt to direct users to harmful websites. The file was generated using wkhtmltopdf, a tool sometimes abused for creating malicious documents.

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.ru/pify?keyword=campesinos+colombianos+pdf In PDF document text
    • http://files.alethearoygadbois.com/uploads/1/3/0/7/130776104/jenomugakud.pdfIn PDF document text
    • http://files.snugglehose.com/uploads/1/3/1/4/131438190/8400704.pdfIn PDF document text
    • http://files.tamimurphy.com/uploads/1/3/1/3/131381078/zibazesarutoj_watozufisema_zigabuzala_bonirot.pdfIn PDF document text
    • http://files.frederickcitybaberuth.com/uploads/1/3/0/7/130739383/6335122.pdfIn PDF document text
    • http://files.chaletretreatministries.org/uploads/1/3/0/8/130874608/2d23e1e.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/1/0432/5628/3296/files/48475937340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/loboravafobipamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/82815474985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/tojededajiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7269/files/panek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/gelaguvab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7330/files/waxatudibagulowularopog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/37476067881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/75830114582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0797/files/disupisetavek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/dobut.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_off000081a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A7 5076 bytes
SHA-256: f2570ab093b9ad9bd61324593b3d419667920784d5fde837cb073993a6825dfe
font_01_sfnt_off000092c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C7 9956 bytes
SHA-256: ef7e3cdf6a8f527071ccd89043efdc35e59371cbbe9ccf776473b72cb4c88ba5

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