Malicious PDF — malware analysis report

Static analysis result for SHA-256 724ca2b9f991ea76…

MALICIOUS

PDF

39.1 KB Created: 2020-08-07 18:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b232bf6efe20c53736764638c506d95 SHA-1: 0a823dce3ef68c4ec537387ccf7df9b6a48a6777 SHA-256: 724ca2b9f991ea7667dae2ed51fc2dfe19e68d693d0c72a18844dbfb47f9ff75
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting a phishing or malware distribution scheme. 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=thin+book+of+appreciative+inquiry+pdf In PDF document text
    • http://files.nangreypottery.com/uploads/1/3/0/9/130970003/xowosusamivorev.pdfIn PDF document text
    • http://nabipi.bodyessencellc.com/uploads/1/3/0/9/130969465/6d9c50083e66.pdfIn PDF document text
    • http://files.michelamclaurin.com/uploads/1/3/0/7/130740563/4377520.pdfIn PDF document text
    • http://files.annanelsondaniel.com/uploads/1/3/2/8/132814096/daxuguboxinusamaregi.pdfIn PDF document text
    • http://xedew.nyeusiworld.com/uploads/1/3/1/0/131070767/7500964.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/1/0437/7794/9848/files/nintendo_wad_downloads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/pabunekevav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/how_do_i_name_my_discord_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/vaxikigizupotuxoletijeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/16219586750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7134/0698/files/wedadub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/51277085253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/nedubexebimasezew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/rilozidusifozap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/antibioticos_aminoglicosdeos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/sedasetopatixeduxeniwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/saxejojesisowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/130_u.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/vosuperebagogijomibanasid.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: michelamclaurin.com 4 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000593d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593D 5476 bytes
SHA-256: 650957f5c931452802d8b49bedf1bb6de9daf81fb44c96af6ce7f37b68bc3828
font_01_sfnt_off00006be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE0 10380 bytes
SHA-256: 05d7a5ea570cad4ff460b7fc4df332a75220904be3ce41bb2af5fe56661b68f8