Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d877b5ff627ea0…

MALICIOUS

PDF

49.1 KB Created: 2020-08-11 03:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a19a3eaf7b8c320f34ea4e00c0a87573 SHA-1: 37237f2fc89e4a3e4b641333f4a59c30e3f4b56e SHA-256: d6d877b5ff627ea001f0527139db024c271d3a7c71002775e7127f490e48ca94
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=summarize%20spoken%20text%20pdf'. The document body, though heavily obfuscated, contains text suggesting it is a summary of spoken text, likely a lure. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm SEO strategy to distribute the malicious content.

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=summarize%20spoken%20text%20pdf In PDF document text
    • http://files.podicongo.com/uploads/1/3/0/9/130969742/1659992.pdfIn PDF document text
    • http://somuzav.atruechristian.com/uploads/1/3/0/7/130776485/pobemujatafuvel.pdfIn PDF document text
    • http://files.bambooartscenter.com/uploads/1/3/1/8/131857071/pujeriwetid-napofemerumaw.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/1/0428/9835/8432/files/49893706483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4479/7605/files/2015_acls_provider_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/98061616697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/48410754563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/94522281176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/47027492344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3138/6517/files/axis_and_allies_board_game_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/zomuronijejunewugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/tapugisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/database_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8131/8056/files/30530670647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/15412274742.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_off000081bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BD 5440 bytes
SHA-256: 448ea4d95e77a901c16ec6383de59fe0d466ce497ed4c99bf8dd19a610eb731a
font_01_sfnt_off00009436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9436 10392 bytes
SHA-256: cb635d4f7b50bfc5abf12d09fef912622fb5623aae969ff958bb9c7e96f46feb

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