Malicious PDF — malware analysis report

Static analysis result for SHA-256 cccc659842ffbd8e…

MALICIOUS

PDF

36.8 KB Created: 2020-08-14 16:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2803ae02412e5fb60241a43fbae86562 SHA-1: 135d23b5c076c01d3cd6068557d2093b59314397 SHA-256: cccc659842ffbd8eac5a1846251315c9d67cd0072c5f5259b00c97aa57c5a9da
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=incredible%20english%20pdf%20download'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO link farm heuristic, suggesting an attempt to manipulate search results or distribute content. No scripts were extracted from this sample.

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=incredible%20english%20pdf%20download In PDF document text
    • http://files.staragricultureproducts.com/uploads/1/3/2/7/132740338/3741638.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/livoxigugefeguvon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/demonstrative_pronouns_exercises_advanced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/worusixevakupuvivotod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8269/4312/files/wigozuvojedukitisekabitem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/becker_muscular_dystrophy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/43057626656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62856854762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/imperative_and_exclamatory_sentences_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5221/2130/files/english_simple_past_tense_exercises.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 4

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_off00005145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5145 5588 bytes
SHA-256: 57fcb4277bbd7cf9abc37c741083a16e196c82c026fa199b5517e1b0c77ec8a1
font_01_sfnt_off0000643e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 10200 bytes
SHA-256: 2e78f242f9836654214c2d9b75d25f557e584897cf912aba5b68dc4dd5a53e20

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