Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14c42ce2f9a35fe…

MALICIOUS

PDF

40.3 KB Created: 2020-08-08 21:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92379a523b5603121d143b8d29927139 SHA-1: 4399c417a11fcc9148336e8c2240b6a08a9e2950 SHA-256: b14c42ce2f9a35fef00a3f7d2de28b14ba5f1f0b4ff21804a040475b638bc12b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=jrcalc%202013%20pdf', which is flagged as malicious. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to distribute 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.cc/wb?keyword=jrcalc%202013%20pdf In PDF document text
    • http://files.energyworx2.co.uk/uploads/1/3/1/3/131398097/gijuwemoxapuw-pileduseja-dejoleve.pdfIn PDF document text
    • http://files.teaching-entrepreneurship.com/uploads/1/3/2/8/132815181/7138510.pdfIn PDF document text
    • http://files.sundevich.com/uploads/1/3/0/7/130740231/xokejisizexivin.pdfIn PDF document text
    • http://golagaj.doggiestylezinc.com/uploads/1/3/1/4/131407995/pesebefudupavav.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/1/0428/2259/8823/files/92702930534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/23103052322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/31640679533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4579/6512/files/folemirunuwimezoxipobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/zewexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5266/1912/files/54737823056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5093/4173/files/54502395126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3188/8021/files/84682643032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/mekesofaxovojujudijaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/guillermo_gonzalez_microwave_transistor_amplifiers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/vuwasugovilajejuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/rezidek.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 7

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_off00005ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA0 5448 bytes
SHA-256: 00f7796bef4bca828417b9faa4e18594fce92148a0cf1dab14fe8c44f442b810
font_01_sfnt_off0000713d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713D 10424 bytes
SHA-256: 8664aa600d173652060ace7f569719e6ce28cf5f98540728983653ca0057fe65

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