Malicious PDF — malware analysis report

Static analysis result for SHA-256 1490ebf03b135796…

MALICIOUS

PDF

34.4 KB Created: 2020-08-14 17:04:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb3ea90853e160f6ece4fde02b0ab06f SHA-1: 6c158b75b6ca3833bd52bc4d8442ec9328223121 SHA-256: 1490ebf03b135796e4be2c2b480065d9dd14edd808191b6e495f00d7dd80ad0b
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, disguised as a crossword clue answer. The ML classifier strongly indicates maliciousness. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware download 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=answer+to+113+across+geography+crossword+clue In PDF document text
    • http://bipipef.bgmassociates.net/uploads/1/3/1/3/131383483/purovatiperidar.pdfIn PDF document text
    • http://vitobefap.wow4metrodetroit.org/uploads/1/3/2/3/132303338/448007.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/1/0434/0000/3749/files/access_bars_livre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/35747649460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/zanuleburamuxelajojame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0713/8201/files/financial_accounting_basics_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/vapupukidokazoliribile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5888/files/17815264454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/wovugijev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4394/6649/files/gavavoviguzifuvep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zodotuxufaliga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/3370537941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/49062268198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/21328327999.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_off00004780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4780 5732 bytes
SHA-256: e61e9c876f0f9bdab56ff22e6298f8f433f96339286ac52ff7bddf7b0bc6ecbc
font_01_sfnt_off00005b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B11 9820 bytes
SHA-256: b774dc0749d5ad058a47942d9157b2c30034db70d57faffa76c77e483ef159b4

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