Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7a8f5f0121667c1…

MALICIOUS

PDF

42.8 KB Created: 2020-08-17 12:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a5791d8825a222c419e10eb5e998e07 SHA-1: 50678a0d03e834ca46075210b05ff531accb9f21 SHA-256: a7a8f5f0121667c13e11a108ffa2f8e94e02f93cc86e2d2552c85993f89fae2f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a malicious redirector link that points to 'https://ttraff.cc/pify?keyword=igcse+mcq+answer+sheet+pdf'. This URL is designed to lure users by mimicking search results for educational content. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The presence of a 'download button' heuristic further suggests a deceptive workflow aimed at tricking the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=igcse+mcq+answer+sheet+pdf In PDF document text
    • http://files.antiquestauranga.co.nz/uploads/1/3/0/7/130739012/jebov_penux_bepuka_xaxitijoka.pdfIn PDF document text
    • http://files.andrewscole.com/uploads/1/3/1/3/131398334/1525953.pdfIn PDF document text
    • http://files.redneckfest.org/uploads/1/3/0/7/130776749/2204416.pdfIn PDF document text
    • http://sadawo.crafty-counselor.com/uploads/1/3/2/8/132814930/2577648.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/1/0428/9835/8432/files/tolipokegegami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/picture_description_vocabulary.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/1/0428/3983/4791/files/embryology_timeline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3962/5111/files/epidemiologia_basica_ruth_bonita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/personification_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/63209960021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/sbi_bank_po_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/wenefixajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/lexovufijisivoseno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/chasing_liberty_movie_free.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 8

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_off000064bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 5692 bytes
SHA-256: 70ee94d839ea64cf09843c1118a127ad60d78284c56fd6f39d80d3bcf38b220e
font_01_sfnt_off000077f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F1 11328 bytes
SHA-256: cb68562ebc0c927f4bea509fa4a90dcb8777e134b8dcda1fccc27be18cce130d

Open this report in the interactive analyzer, or submit your own file for analysis.