Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7d40df8d07fb53…

MALICIOUS

PDF

39.5 KB Created: 2020-08-16 12:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed75b2ed087b7c1305e22bdc0ce0e574 SHA-1: 42bddfb031633054ec3558accc223414b9f14217 SHA-256: 8e7d40df8d07fb53c379968b0d786e28246aff53b59fc1a4e56bf9e9106a8038
194 Risk Score

Malware Insights

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

The PDF contains a prominent link that mimics a search query for a useful tool, but the link points to a known malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains hosting other PDFs. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL is a high-priority indicator.

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/wb?keyword=convert%20pdf%20to%20powerpoint%20adobe%20reader%20xi In PDF document text
    • http://bamekux.crucottopittocenter.com/uploads/1/3/1/3/131380213/pijilotaxukune.pdfIn PDF document text
    • http://files.eileenwiviott.com/uploads/1/3/0/8/130814297/vulinuzax-zaposibepafaw-mizex-dufepabo.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/1/0428/5467/8687/files/34589268556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/bokebidefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/rolikojejepowaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/synonym_for_savior.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/vefutodipitosuderojuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/sajuxinaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2733/1232/files/bosoxebidafunuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/vaguwelopamavagugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/bitate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/temotujoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/maxezivizawaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/25874748533.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 1

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_off00005cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF7 5092 bytes
SHA-256: 5981958599234142b8cbf43b652cbab1994cf45b77bf433fe6ce58251ca4b430
font_01_sfnt_off00006e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E64 10192 bytes
SHA-256: 407a5a61d62fb921139afb21dbc4b204d991f70f9bf2ff06c0e6080782d16e53

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