Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cea6fde48b6b09e…

MALICIOUS

PDF

51.8 KB Created: 2020-08-22 12:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b29ee6038fe74bba0f68ba6302af803a SHA-1: a06684065fb4dbf7b6d48348f57e77e1d72c3764 SHA-256: 4cea6fde48b6b09ee3eb1b68d454211ece5f3772ed41d63c68f79a71848f4f2e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'acids bases and salts worksheet answers'. The presence of numerous other Shopify links, while some are benign, suggests a link farm or SEO manipulation tactic to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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=19+acids+bases+and+salts+worksheet+answers In PDF document text
    • http://files.maria-cipriano.com/uploads/1/3/2/8/132814306/kuviwupapemad.pdfIn PDF document text
    • http://files.topthispizzacrusts.com/uploads/1/3/2/6/132695829/rujibopatu_pudoruvomenodek_xitujajimaxet_tixoxe.pdfIn PDF document text
    • http://dokenopim.allaboutlinda.com/uploads/1/3/2/7/132712615/munejodobikebex-betez-gajodu.pdfIn PDF document text
    • http://gazus.platinumfragranceoils.com/uploads/1/3/1/3/131383657/8eaf607ed5ce628.pdfIn PDF document text
    • http://files.erlendevensen.com/uploads/1/3/1/3/131379439/8704459.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/1/0430/4912/3993/files/windows_8._1_pro_keys_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8947/7278/files/didelot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3933/2251/files/4chan_co_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/16110026210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8820/6238/files/23435824870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8132/5978/files/lozetatanezaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1761/files/97192135350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8447/files/tatoxor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovonuvebapade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1179/1253/files/sheet_silicate_structure_definition.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 8

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_off00008262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8262 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off00008c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5D 5436 bytes
SHA-256: d6fe659ee14b2df82ac2811c9ed08c0f8a9c6c11408fee2e9603effa5242e838
font_02_sfnt_off00009ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EDE 10212 bytes
SHA-256: 0442d345216f277291bec8780c0381a5e1892bd31bd357cad76b90f7f0f0a118

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