Malicious PDF — malware analysis report

Static analysis result for SHA-256 19779186ea6ad7ed…

MALICIOUS

PDF

32.2 KB Created: 2020-08-12 17:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 481aa1f6e56afb0baa53eae0fa0b70cd SHA-1: 33b65445443e0306c28673b4b3f8f7856162e4b9 SHA-256: 19779186ea6ad7ed9b0519eaca7f9615ce9f30db3ba10bd46c6d1760f051ad03
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics and IOCs. This suggests a phishing or scam attempt designed to redirect users to a malicious site.

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.com/pify?keyword=chain+rule+with+trig+worksheet+pdf In PDF document text
    • http://wumuteg.clearlyjoewhite.com/uploads/1/3/2/8/132816066/8604089.pdfIn PDF document text
    • http://files.lukascrafts-innosense.com/uploads/1/3/2/6/132696029/pawunugixigamiriku.pdfIn PDF document text
    • http://files.detailsstrategicadvisors.com/uploads/1/3/0/7/130776682/gawunexix.pdfIn PDF document text
    • http://files.faustina2.com/uploads/1/3/0/7/130775741/8353447.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/1/0429/5219/6249/files/17018239435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/30976657094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/rafudoxadupozef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/69691851519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1567/5809/files/95666960933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fasexerogetotano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1021/1491/files/math_logic_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/seven_chakras_in_human_body.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/9533650287.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 5

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_off0000420c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420C 5364 bytes
SHA-256: a5dec412eef93fc90e3935d9d79c898ddf8cb374b5c992f29149573c2e5eb679
font_01_sfnt_off00005455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5455 9340 bytes
SHA-256: 9094855a21cddd0f25db87c92c3a89e644c2bcd07c8ba7ad32e47fc0649cb23f

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