Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7ca550bb335745…

MALICIOUS

PDF

36.6 KB Created: 2020-08-19 02:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaa18df6b65e429a5dd2558eb5a6b478 SHA-1: 62b208d4d061be6384bcfc058ec78a55e08f0042 SHA-256: 7e7ca550bb3357456e697e66aaf37ce56da7a2fe5f27fb8faeef4ba4e14f97ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests a phishing or scam attempt using a link farm to distribute malicious content. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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=functional+groups+biology+worksheet In PDF document text
    • http://files.alexsalvi.com/uploads/1/3/1/6/131636907/sogerotik-karum-panimo-pasexa.pdfIn PDF document text
    • http://molir.athenasbyjoellen.com/uploads/1/3/1/6/131607407/1648551.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/1/0428/4071/9516/files/17082448248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1996/files/jurikavibufifile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0839/3369/files/movex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/58996422814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/commercial_vehicle_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/gomal_university_ma_islamiat_date_sheet_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/joditokonunedejubegatoxor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/25765661937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/gurejonaxidogojufer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3266/4481/files/4th_grade_math_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4568/files/physical_science_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/tifafenizokujezu.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
🗂 Part of campaign: alexsalvi.com 3 samples

Related samples 3

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_off00004e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E16 5548 bytes
SHA-256: 649dfd162a7a3ce27c49163229c3e204641ef4e46d3049ecdb3f246ce59d7a81
font_01_sfnt_off000060fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FD 10192 bytes
SHA-256: fd92c8f2251ccae4f268b49d22abd3a0a38f9c17c01d8c85491d1cccc335c243

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