Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d11a9f7e2f9e7a4…

MALICIOUS

PDF

45.2 KB Created: 2020-08-13 11:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a99fbfd96a30220392dca6b2f26d724f SHA-1: 9fbd532c8048ed5dbf21c04e9c73276052510632 SHA-256: 9d11a9f7e2f9e7a434f387f4c94159cf65919ed0ba3b87c1997172588aea2ef9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wb?keyword=facile%20facile%20a2pdf. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to a malicious site. The presence of many shopify.com links indicates a link farm strategy, likely to improve SEO for 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=facile%20facile%20a2pdf In PDF document text
    • http://files.shadedlily.com/uploads/1/3/1/3/131380547/78a1bc80.pdfIn PDF document text
    • http://files.bcawworcester.com/uploads/1/3/2/6/132683357/970307.pdfIn PDF document text
    • http://nogune.lemoine.us/uploads/1/3/0/7/130776445/tosub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/mufumosodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2416/1695/files/vaccine_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/sezevusep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/pizuremeduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9269/5458/files/4309456573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/xididoseje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/66339804232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/easy_english_sentences_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/agonist_and_antagonist_drugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vozazugimutiwobawaxuleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/21807484302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7872/0414/files/deferebimiluxofujiguzibi.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F65 4456 bytes
SHA-256: b1dbca3b564ae6764b270f8ad643ff0fae9e8df457188b71441d0e3f08e0a90b
font_01_sfnt_off00006e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8E 13580 bytes
SHA-256: 84611034d72f735ec5ccea8039fe7575cda403ed8e9e2776b6d15c73487df2da
font_02_sfnt_off000099d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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