Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69d98c5a80852b1…

MALICIOUS

PDF

40.5 KB Created: 2020-07-31 09:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e181b55b21113d6ce5ce9759c9b3130 SHA-1: 2d4482b8bd773d0e853eaa890fcb11abcfede6c8 SHA-256: e69d98c5a80852b16818750ea278ab890de0212b1bb10bedd4bbc5d64f3807a5
202 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on platforms like Shopify. One of the primary links leads to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'basic electronics books pdf free download', combined with a visual download button heuristic, indicating a social engineering attempt to trick users into downloading further malicious content.

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.ru/pify?keyword=basic+electronics+books+pdf+free+download In PDF document text
    • http://files.thstofficial.com/uploads/1/3/2/8/132815343/934f9b.pdfIn PDF document text
    • http://files.shelleyartwork.com/uploads/1/3/0/7/130739180/6447.pdfIn PDF document text
    • http://files.andywilsonmusic.net/uploads/1/3/1/4/131452880/givovejikasonapi.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/1/0431/4365/9677/files/rogukiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6946/3959/files/pukasisibamogodonuzoxedes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/67542357777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/19910484645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/najokugatunira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7985/0398/files/marejipuwiwimelizev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/53016334625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/vasojijoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3263/0680/files/89498207220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/tetew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/17679257025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7378/1416/files/fomazalod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/75390409366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0285/files/soruvo.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_off0000611c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611C 5280 bytes
SHA-256: 9afd943672e909c7ab7183eb95a7ef7c0ca65f5629bbbd039dc93bd049c35f26
font_01_sfnt_off00007318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7318 9880 bytes
SHA-256: 6323ffa114d33e0ec11b234b17b51038a65b1d6e0da4da65890664f02fe9f3d6

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