Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c405c1232460c57…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 20:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd4d7261d25cb5cd8fea86c136b877ed SHA-1: 2e08154229bbaa4810c170552a8ee4ffa553f8fc SHA-256: 9c405c1232460c572127b2334512503f4877af0507259abe22511d9b44623739
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link that points to 'ttraff.cc', which is known for distributing malware. The document body, though heavily obfuscated, contains text related to 'birth certificate format pdf' and the URL itself, suggesting a lure. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content or redirect users. The ML classifier 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.cc/pify?keyword=birth+certificate+format+pdf In PDF document text
    • http://files.quailhoney.com/uploads/1/3/0/9/130969045/ginomum-gigebaleju.pdfIn PDF document text
    • http://files.ciprianoclassic.com/uploads/1/3/1/3/131379382/3536762.pdfIn PDF document text
    • http://files.operationgringo.com/uploads/1/3/1/3/131398231/mupezusa-xilixodo-wosuxanowap.pdfIn PDF document text
    • http://files.swedesthewaytheywere.org/uploads/1/3/1/4/131437655/modixu_bududoxaz_gutebelozoganof_pebutosejajiwek.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/1/0430/7825/4753/files/sudalidebipafudiwisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/49284003714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/41265021500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/list_of_free_email_domains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2629/2629/files/lodonulufobejeruboze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5683/1395/files/15900424651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5057/files/alloplastyka_stawu_biodrowego_andrzej_pozowski.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9673/3864/files/transition_words_worksheet_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/0210/2682/files/export_html_to_react.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_off00006b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B50 5236 bytes
SHA-256: e9760369a963bcd4bfb4f79d6cb45ce2f07f4a87abc5f4b84f1618ea3ac61bad
font_01_sfnt_off00007cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF2 10288 bytes
SHA-256: 7958e2eee8158a08a2fdde4affdd3373546d3b9e2242c6eb9725de99f822a8f6

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