Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcb24325c4b3e1a9…

MALICIOUS

PDF

38.6 KB Created: 2020-08-07 05:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc10b4e2928db2e6c6936ab27c355ca7 SHA-1: d3e59ee14fcbd836b5b5ee0b45c44ac7743d4e2a SHA-256: bcb24325c4b3e1a930475d16fc10b2839252745d3073f664424ebc0f4003f4d9
202 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 ttraff.com. The document body, though heavily obfuscated, contains text referencing "Attach pdf in mailchimp" and the malicious URL itself. The PDF also contains a large number of embedded links, many pointing to shopify.com domains, which is characteristic of link farm abuse. The primary malicious link is https://ttraff.com/pify?keyword=attach+pdf+in+mailchimp, which likely serves as a lure to a malicious payload.

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.com/pify?keyword=attach+pdf+in+mailchimp In PDF document text
    • http://files.allianzconsultingsolutions.com/uploads/1/3/0/8/130874474/ffed9ed5c0ad.pdfIn PDF document text
    • http://files.elizabethstaiger.com/uploads/1/3/2/8/132815866/5404855.pdfIn PDF document text
    • http://files.teachinghooks.com/uploads/1/3/1/4/131408250/ebf8501f9.pdfIn PDF document text
    • http://files.clean-lineblacktop.com/uploads/1/3/1/4/131406149/jotamixik.pdfIn PDF document text
    • http://files.swaggerstateathletics.com/uploads/1/3/1/1/131163932/6908033.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/1/0428/7453/6103/files/disney_plus_roku_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/56737435182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/ap_us_history_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/zapasidedena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5641/4363/files/74463216618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/dinalotowuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/77544684842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/74955349394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/74967608029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/vibozajuvapexulam.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: elizabethstaiger.com 3 samples

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_off00005a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0E 5112 bytes
SHA-256: 7896c20aab622a0b8b9f7069f4a9c9893835f9c0928ea7bc241c97f9ea2eedd2
font_01_sfnt_off00006b57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B57 10200 bytes
SHA-256: 90786da55f9471c1a003dae05d4c67c100a27b0fecef853176f4c7a5db387c2a

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