Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb6efac62412ff0…

MALICIOUS

PDF

40.3 KB Created: 2020-08-06 23:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35e22473d63b283e6e64795aaceb5697 SHA-1: 8c54cc6bb54dfcdce0d1e170b4bc0712cbbf4e3d SHA-256: 4cb6efac62412ff0cc2afe6a4d9e13702317f3eacbc8ba45e67e86d998933eb5
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs, many of which point to a link farm hosted on Shopify. One critical heuristic identified a malicious redirector link, specifically 'https://ttraff.cc/wb?keyword=types%20of%20forces%20worksheet%20middle%20school'. This suggests the document's primary purpose is to lure users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=types%20of%20forces%20worksheet%20middle%20school In PDF document text
    • http://files.ghosthunterdannorvell.com/uploads/1/3/0/7/130776861/6884673.pdfIn PDF document text
    • http://files.bravechoicesmn.com/uploads/1/3/2/7/132740692/3102480.pdfIn PDF document text
    • http://files.resourceology360.com/uploads/1/3/0/9/130968994/bamatakaladod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/56645542455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/how_to_accept_yourself.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/12558117438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/benowajegetivizumubexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/fibamugalogolox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30036161276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/vawuvetoganusawenivekoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9164/files/getuxuluves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/livemarope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zaduvezumutup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0319/1194/files/jetibuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/pizukazidoforeb.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F7 5072 bytes
SHA-256: 8b95deea5f0060281bb48c88e45b0d25cb348dd2137ab5b87e35350331513cda
font_01_sfnt_off00006551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6551 9444 bytes
SHA-256: f1c135569109e6fe0149bb77046ce8c6b207074fbd7213dc0ce51b00a009fc91
font_02_sfnt_off000085b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.