Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74b1b3dca648397…

MALICIOUS

PDF

65.8 KB Created: 2020-08-08 15:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58f6aa6e2c2ae966e2867ca3212023b1 SHA-1: 3ede704cae483cd31049c16670546aafea819c31 SHA-256: e74b1b3dca648397e57abf3dec13a4da7385a0b12238701acbf4147842be3190
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=anemia+perniciosa+causas+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to trick users into clicking the link. The presence of multiple external PDF links further indicates a link farm strategy, common in SEO poisoning attacks.

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=anemia+perniciosa+causas+pdf In PDF document text
    • http://files.mveanow.org/uploads/1/3/1/6/131606594/8a4e6cb4.pdfIn PDF document text
    • http://files.shieldedhearts.org/uploads/1/3/1/1/131164572/ridaxe-kebijurarine-gonamodazonozep.pdfIn PDF document text
    • http://nibiki.onionmanproductions.com/uploads/1/3/0/8/130874633/5a480d7987f9819.pdfIn PDF document text
    • http://files.tmwsports.co.uk/uploads/1/3/2/7/132740536/gekemawoto.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/1/0438/7880/9755/files/14204645319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/28397604485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6573/5328/files/nefesuxafapefewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/f_b_service_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/kozagitefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/73785182453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/sibiromijojenunoveke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/63083119940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/15283489520.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0EC 5260 bytes
SHA-256: 91a39ff28cd058665e5aaee9196c3eea20a681d14244e09c7d8f3562fda07a74
font_01_sfnt_off0000d2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B1 11628 bytes
SHA-256: 213536033926bec65d201e109305f6bc6a529729ab0929edd98a5abda84f468c

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