Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa625d1b621f455…

MALICIOUS

PDF

39.8 KB Created: 2020-08-03 02:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9a5b258f0fd0a127b903c586e418626 SHA-1: dafd25a17d940cd47cc68c94ae6966e342c976a9 SHA-256: aaa625d1b621f4555b0a0d71edf200b0d51ad1b552a75f59a0c514d265d81683
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to ttraff.com, which is a known malicious infrastructure. It also contains a PDF link farm heuristic, indicating a large number of outbound links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the text 'What is love. mp3 download' and the malicious redirector URL, suggesting a lure to download content. The 'SE_BROWSER_INSTALL_LURE' heuristic further supports the social engineering aspect, indicating the document likely prompts the user to install something to view content, which is a common tactic for malware delivery.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=what+is+love.+mp3+download In PDF document text
    • http://files.alisalman.ca/uploads/1/3/1/6/131636651/1098389.pdfIn PDF document text
    • http://files.mars-hill-press.com/uploads/1/3/0/7/130740530/nexavasenozesaf-zupore.pdfIn PDF document text
    • http://files.jacobtrimble.com/uploads/1/3/1/3/131379828/e38b24f9bd1848.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/1/0428/3020/0991/files/loxivope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/43081616522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/37378132580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/ffxiv_how_to_buy_a_house.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/70431359068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4346/2037/files/how_to_write_acknowledgement_for_thesis_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/bujerugenewunesunoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/76766179793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/lubaxebujisu.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_off00005e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E84 5464 bytes
SHA-256: ebace45d8277d1b15006706e193f603aac0f4d7353206bbd119512ba20f8161e
font_01_sfnt_off00007112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7112 9844 bytes
SHA-256: 98a304c43f0cbe1691809ad588cd61d71b1af82c95ee71ad40afdd02a1f8b4ea

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