Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae76943f13d5a209…

MALICIOUS

PDF

52.1 KB Created: 2020-07-31 10:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 772ca281bdca4ed4ae3e6b0aab8d1a6d SHA-1: ae7f598e14994ec9cf2d14d5efc8ff708af223f6 SHA-256: ae76943f13d5a209550191416db2253ad3ba0f93565182893ee03a619a84d0a3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure. Additionally, 'PDF_SEO_LINK_FARM' suggests the document is part of a scheme to generate traffic or distribute malicious content through a large number of external links. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the link-based attack vector.

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=beauty+and+the+beast+story+with+pictures+pdf In PDF document text
    • http://files.newjerseytaxilimo.com/uploads/1/3/2/6/132682281/3196096.pdfIn PDF document text
    • http://files.etegl.org/uploads/1/3/1/1/131164574/604551.pdfIn PDF document text
    • http://files.norcaair.com/uploads/1/3/0/7/130738513/bodetepalutukir-fevefiwi-zaxodagexox.pdfIn PDF document text
    • http://files.glassbrookvocal.org/uploads/1/3/0/8/130813516/valupikesuf.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/1/0429/3849/9235/files/69785972510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/nufogifov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/tezubimusufuzufodamije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/sexinupagimifexomasebale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2638/1975/files/14036595259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerisorajomowuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0913/6024/files/82938384970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1141/4939/files/78341336658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4344/files/dakekuvap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4193/7818/files/47370504478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/mobewawupelusajapovurames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30036161276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/zupowabipupokegoz.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 6

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_off00008dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCD 5476 bytes
SHA-256: 6c7369b7c866c492eb969af01b4c91ab140ccf2fa1510f385bb935906f8bb052
font_01_sfnt_off0000a06d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA06D 10084 bytes
SHA-256: c6edc79caa479418852b907c85d4763144b0d407c5db5787e5d8790eff3a0ab2

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