Malicious PDF — malware analysis report

Static analysis result for SHA-256 997a32232ce23615…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 03:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f98fff3796a45dd30bcbd353c924963 SHA-1: fad87d505b26498ef0ce88cc7eda17c7096cf9d3 SHA-256: 997a32232ce23615e6d8180669db87f58d5a1848ea00ce0cd226e6ed8a26c094
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 links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=elsevier+journal+template+2017'. The document body, though heavily obfuscated, contains this URL and references to academic templates, indicating a lure to a malicious site. No scripts were extracted from this sample.

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/pify?keyword=elsevier+journal+template+2017 In PDF document text
    • http://files.eepto.com/uploads/1/3/0/7/130739069/megawewofix-gafusemiluga-supogikatufew.pdfIn PDF document text
    • http://bowofewiz.molisereview.com/uploads/1/3/0/8/130874254/rubexex-wibagabewozoru-togove.pdfIn PDF document text
    • http://files.allegrezzasingers.com/uploads/1/3/0/8/130873822/1f851d.pdfIn PDF document text
    • http://xofukuxe.allanenv.ca/uploads/1/3/0/9/130969633/3830135.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/kisobipujisit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/xotuvajosem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4804/1637/files/adverb_worksheets_for_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/how_far_away_do_mobs_spawn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4675/6506/files/25840480122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/goat_herd_management_spreadsheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/94409348752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/8128/1191/files/religious_fundamentalism_causes_and_effects.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FA 5344 bytes
SHA-256: bbc5bbb455612db994506b94c9a85ea12e3d00c28a01e9acf585f92e07961adc
font_01_sfnt_off0000761b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761B 10468 bytes
SHA-256: 197715f8e6db42703d643a2ab015d9548d9f58e5b90172387968213ed313b268
font_02_sfnt_off000099c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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