Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bae840d2f5e97c1…

MALICIOUS

PDF

41.2 KB Created: 2020-08-21 23:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d359760a209db3794a7b2e6a9d7df87 SHA-1: 0252a77dcc4e5f8d128b6d0994f084bb4858d18a SHA-256: 3bae840d2f5e97c10ae59778a1f4c04b8f57315ccb7c2ed0716286b443bd8edc
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.com/pify?keyword=maplestory+alchemy+guide+2018'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The ML classifier strongly flagged this PDF as malicious. The presence of numerous links to Shopify-hosted PDFs indicates a link farm strategy, likely for SEO poisoning or to obscure the final malicious destination.

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=maplestory+alchemy+guide+2018 In PDF document text
    • http://files.guyhang.com/uploads/1/3/1/4/131438539/8750354.pdfIn PDF document text
    • http://figimuxep.sunsetskinboutique.com/uploads/1/3/1/4/131454215/nazile.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/1/0435/5312/8612/files/15366951044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2113/1161/files/72841594531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/free_relaxing_music_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/alternaria_brassicicola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6478/6086/files/ropovakefimap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/transforming_our_world_2020_agenda_for_sustainable_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tawoxusabevesumaxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7787/6377/files/68569278795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F1 6112 bytes
SHA-256: 44871abc6e6f6770c5128e1feb3faa1cae0e4218dbd197033cb9c5dbf21741cd
font_01_sfnt_off000075ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 10096 bytes
SHA-256: 5300a4660588d564ca73f4a22f86e25cd79fbc33a796f79a50f1a4d83bf44dce

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