Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8c03619c598a36b…

MALICIOUS

PDF

43.2 KB Created: 2020-08-04 16:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9922c3413938589b36a436044bcbf01c SHA-1: 465b6fc1c40da2dc5f0c3e71a5e87c419ba7b5ac SHA-256: b8c03619c598a36ba8a76d40606c25ba6efc919a9d9683ea999c7c86e1d4471c
194 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, one embedded URL, 'https://ttraff.cc/pify?keyword=alexander+hamilton+book+ron+chernow+pdf', is identified as a malicious redirector. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution, disguised as a book download.

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.cc/pify?keyword=alexander+hamilton+book+ron+chernow+pdf In PDF document text
    • http://files.churchvsports.org/uploads/1/3/1/4/131437932/3145738.pdfIn PDF document text
    • http://files.newlightfotodesign.com/uploads/1/3/0/8/130813111/7154933.pdfIn PDF document text
    • http://files.bulldogsread.com.au/uploads/1/3/1/4/131438046/wasez.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/1/0435/4460/8932/files/zaxezenigoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/mesuleselulazapumolupan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/juwikirovajadeloxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/50255360092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/98535965157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/95044293653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/45718507044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1484/7655/files/libro_catecismo_para_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0279/6964/files/intermediate_algebra_bittinger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7723/8945/files/ts-_2000_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4169/9478/files/94490530776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/sogapadape.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 5

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_off00006a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A21 5568 bytes
SHA-256: cd5cae52e4dfdbd1735cddcb2e9821c59d48338e5db29ad10a13c5d2355ccedc
font_01_sfnt_off00007cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFE 10228 bytes
SHA-256: 870060687cd47856de499743c9466ec9ea127b31afd4f67bc257256625f7414b

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