Malicious PDF — malware analysis report

Static analysis result for SHA-256 0acfb5b409943623…

MALICIOUS

PDF

69.1 KB Created: 2020-08-04 23:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fe6dc4edf4d4700d377ca2b40ef0297 SHA-1: 60c64edd89951ea944c0f9973ca3fdc60c7b3cab SHA-256: 0acfb5b409943623056ec2cf64a7110741e6bb0481991879d4dc2de3dcc8862d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector at 'https://ttraff.com/pify?keyword=calcular+porcentaje+de+grasa+corporal+por+pliegues+pdf'. This redirector is part of an SEO link farm, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=calcular+porcentaje+de+grasa+corporal+por+pliegues+pdf In PDF document text
    • http://vafazulaz.cavumcloud.com/uploads/1/3/1/8/131872225/litekutezi_semuvigasovena_lamidegesira_vezijokurolenam.pdfIn PDF document text
    • http://files.clubderby.org/uploads/1/3/0/9/130969356/37e41c368d3cde9.pdfIn PDF document text
    • http://files.fourcornersencampment.org/uploads/1/3/1/6/131606431/lamaj.pdfIn PDF document text
    • http://files.dekalbtennessee.com/uploads/1/3/2/7/132740424/a4863c3039c.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/1/0438/8257/8088/files/lisulevijinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/understanding_and_using_english_grammar_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/bumekigisedinowemimopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/37563908957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/jifufirawozir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/soxejoxivugipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/pm_awas_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0519/7985/files/sewakanepeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/9695654144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/bebejemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5226/1795/files/89450781745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/10427178659.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_off0000bea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA5 5304 bytes
SHA-256: 441d624f5f0ee44cc1163eae8b58cd31054b1cea8539974f68b2a9e102f3de2d
font_01_sfnt_off0000d0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C2 17168 bytes
SHA-256: 79c4e0f7d3888eebe2d16bfd5f2903629b74a72e42f9140a69f7e131af884f1e

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