Malicious PDF — malware analysis report

Static analysis result for SHA-256 79c8542fcc6e5a9f…

MALICIOUS

PDF

43.9 KB Created: 2020-08-03 05:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f623ec909b2a9cf06107bc49089ae5fa SHA-1: e9871b26f66bb76395d583d78c12971b3b4e8664 SHA-256: 79c8542fcc6e5a9f9a41609c5e128d73898d8d1cf6b4e029dee2686391cafcd8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple heuristics indicating malicious intent, including links to a known malicious redirector and a large number of SEO-optimized links pointing to other PDFs. The document body contains a call-to-action phrase and the URL 'https://ttraff.com/pify?keyword=stampy+lego+worlds', which is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=stampy+lego+worlds In PDF document text
    • http://files.newtongeorgiadems.org/uploads/1/3/0/7/130775679/zativovel-labosirewi-dorolopav-komujolewef.pdfIn PDF document text
    • http://files.eliseradz.com/uploads/1/3/0/7/130739227/gamofetivipo_bogike.pdfIn PDF document text
    • http://files.francelessart.com/uploads/1/3/0/8/130814043/4079763.pdfIn PDF document text
    • http://files.tcce.org/uploads/1/3/1/3/131379678/rifitad_kafoxox_novuxomegojor_wejuberijokisop.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/1/0435/8320/9631/files/vetut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3735/files/71350820621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9513/8208/files/namamopomaxibijazomujexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2308/1373/files/84011773575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/22552356032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/gedexixovelabaletodakivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9915/2799/files/dozowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2698/0765/files/gikitovexamitategi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/58537594611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1601/9355/files/detafopajapemelasum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/69331839449.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 6

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_off00006d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D85 5576 bytes
SHA-256: 47c52461942789519bc9794a622965adf8db847d681e6f3723d56d8d2cff4a43
font_01_sfnt_off00008078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8078 10112 bytes
SHA-256: cbce2da2392b80cb823acf10e57ba37fc066d65fdf10d3241c17f290854507f5

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