Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6d95771a7a612d…

MALICIOUS

PDF

42.8 KB Created: 2020-08-03 14:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d86d8a1d061b7cc6e1f42720339578a SHA-1: d388cdf8b721278142d09f746ea2ba6085b6bba1 SHA-256: ce6d95771a7a612dd0c2fdd3081b7b06808706f87e9881c5fbe3602bb6245f5b
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as free downloadable content, but the primary link redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'maths aptitude questions and answers pdf free download' and the malicious URL, reinforcing the lure. The presence of numerous external links, many hosted on Shopify, suggests a tactic to obscure the ultimate destination and potentially leverage legitimate platforms for distribution.

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=maths+aptitude+questions+and+answers+pdf+free+download In PDF document text
    • http://merilaf.angieandstormblog.com/uploads/1/3/1/4/131438474/votaredofulatoduxade.pdfIn PDF document text
    • http://files.theandalusiabookman.com/uploads/1/3/1/4/131437532/jorelipo-fowumopusef-pilewil-tibebev.pdfIn PDF document text
    • http://files.noahclewis.com/uploads/1/3/1/4/131438439/dikisap_jadanixik_nibedejapilaru.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/1/0433/9197/5580/files/free_female_vocal_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5226/9717/files/sadetaxako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/1337023749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/sikozebegojogitexabewidag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/sigatuxatatewifirawez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/podenamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5363/8044/files/17643348680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4647/6708/files/ez_go_txt_service_manual_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6343/3621/files/lixituzubonatomovomoleme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0722/1658/files/64285596712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9289/4105/files/ruxabizite.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_off000068c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C7 5352 bytes
SHA-256: 793b20b2303cc35fd74e309f5d20e653c235465d44977b4da5aae181f2714127
font_01_sfnt_off00007b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0D 10248 bytes
SHA-256: b0e27d35778317b057256c5c2e653ef9eab5e29233cf04bc5de56e0d6b38d147

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