Malicious PDF — malware analysis report

Static analysis result for SHA-256 084cc5d55cd85ad7…

MALICIOUS

PDF

39.4 KB Created: 2020-07-29 06:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2bcbcee58e856cbc5a45ead6dd24500 SHA-1: c089ce21bf9f317bc2d3a8b1b0fe4b69fd4fa40c SHA-256: 084cc5d55cd85ad7a3a43836494c698430627c236dd088be2d5c032ee65f226e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous embedded links, many pointing to redirectors and SEO link farms, suggesting a phishing or malicious content distribution scheme. The document body, though heavily obfuscated, appears to be a lure for "ccna lab guide" content. The ML classifier and critical heuristics strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities to redirect users to malicious sites.

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=ccna+lab+guide In PDF document text
    • http://files.wcgme.com/uploads/1/3/0/8/130813134/gawemixojamumofador.pdfIn PDF document text
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdfIn PDF document text
    • http://files.markdavidkaufman.com/uploads/1/3/1/1/131163788/vuvivaxokawirol.pdfIn PDF document text
    • http://files.healingrootshypnotherapy.com/uploads/1/3/1/4/131406659/pavozorare-woxupoti.pdfIn PDF document text
    • http://files.ourcrazyratadventure.com/uploads/1/3/1/6/131606280/f0a14.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/1/0431/9143/5422/files/80793893357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5670/0319/files/76953301725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2886/4409/files/28041446479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/55047859367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1025/1176/files/49274038054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/tibiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/tugeravipugerina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/malugul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/sinuxapawepak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/51792712830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/wetejanumuvavujelobaza.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_off00005f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F14 4688 bytes
SHA-256: e333c024b981d4b76697fed0c0211da078dcde7951d547e16c31b1647319b87b
font_01_sfnt_off00006f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F00 9952 bytes
SHA-256: bc5a2ef80d1a4bebc6fbeaeaf3ae4b071346f6539e3b6d86a1165c8cf6afc5c9

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