Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b70dcace9e6599…

MALICIOUS

PDF

41.0 KB Created: 2020-08-16 20:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76e16365f5c5d26ea2c49f43a082fb22 SHA-1: 018d432dacb258e4119efc4f78e3a9e10b44a0f6 SHA-256: b8b70dcace9e6599eda349ba8d9585058c9a7fc932cefd2882e542b11cb2653a
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also contains a PDF link farm heuristic, with many links pointing to Shopify domains, one of which is 'jumera.pdf'. The document body contains garbled text but includes the malicious URL, suggesting an attempt to disguise malicious content within a seemingly legitimate document. The primary attack pattern involves luring the user to click on the malicious redirector URL.

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=dynamics+crm+dynamic+worksheet+import In PDF document text
    • http://files.mshsiao.com/uploads/1/3/1/4/131453450/8ebd0bb1.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/1/0432/9334/3899/files/jumera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2659/3445/files/97725264968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8009/7687/files/driver_abstract_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3264/1689/files/types_of_shapes_and_their_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/47657671602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/gegezozobuniraler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4128/4518/files/43209040443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/strategyzer_customer_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/12092633924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2659/3445/files/68422267386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8102/4159/files/woraf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/factory_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/46314800698.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 1

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_off0000623e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 5536 bytes
SHA-256: a2b7bdf5a72553f70edb83f132e0407f964649f2ac31f98a0e2a102f2c1c572b
font_01_sfnt_off000074fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FA 10052 bytes
SHA-256: 2eabf3e041ed4becbfec3ebe8f90a6307c60f0bd1a24564c3a3d1b8fa8826975

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