Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa6cab92641bf42…

MALICIOUS

PDF

46.0 KB Created: 2020-08-15 01:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1637fba52090cdf07a1cfe989952afc SHA-1: 53635a9b9811b299e967c6e9e075dc78793e197c SHA-256: aaa6cab92641bf42a3509fe66e825ac1d4bf1acee4ed1b4d9b236a9721eb40f0
234 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=emphysematous+pyelonephritis+case+report'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The presence of a 'Password-protected archive handoff' heuristic suggests the document is intended to trick the user into downloading a password-protected file, likely containing a malicious payload, after navigating through the redirector.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=emphysematous+pyelonephritis+case+report In PDF document text
    • http://rudojogex.inscience242.com/uploads/1/3/0/7/130740257/ace0df.pdfIn PDF document text
    • http://files.thebodyboutiquebykatie.com/uploads/1/3/2/6/132682030/diwagimiranule.pdfIn PDF document text
    • http://files.modson.com/uploads/1/3/1/4/131438079/sarox.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/1/0431/7482/2044/files/2459904718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/wegidikuwideligaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/36693860801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/47803875299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/lobimes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/62372898604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/galbraith_affluent_society.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/56803407424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/t_pain_chopped_and_srewed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0807/files/music_notes_on_staff.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7118/2750/files/peludomokigepituva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1324/2014/files/basic_ms_office_course.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 2

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_off0000699d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699D 5232 bytes
SHA-256: d477829e62a2c68ad31d85ac08874c9daa6ba4bf3bbee5ea0384d7632e898fdb
font_01_sfnt_off00007b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B43 15500 bytes
SHA-256: 97f9b01a116e3823e26dd890b7448a18f5a7cc752360078e7d7173a56acd665e

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