Malicious PDF — malware analysis report

Static analysis result for SHA-256 faec914e87fda1ad…

MALICIOUS

PDF

40.6 KB Created: 2020-08-05 09:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17fdab9a1f76d65f0a03050800571f87 SHA-1: 20c4ba14c6e988ecad97d6a7f9af2b357a36fc4d SHA-256: faec914e87fda1ad6b1d32ca440f86fc158fc683cb749534b27b22b0c21c540c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/pify. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of links and the presence of a malicious redirector are strong indicators of a malicious intent, likely to lead users to phishing or malware distribution sites.

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.ru/pify?keyword=materiales+no+met%25C3%25A1licos+pdf In PDF document text
    • http://files.cagedchicken.com/uploads/1/3/2/7/132710791/b95109bbf960a9.pdfIn PDF document text
    • http://files.foodloveblog.com/uploads/1/3/1/3/131380868/vosirijofa.pdfIn PDF document text
    • http://files.montessorischoolofdecatur.com/uploads/1/3/0/7/130739836/bavivorum-kuximasete.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/1/0433/7899/9446/files/molenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/lujinukinipafesodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/38270670028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/tokesababonatoxikebuduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/7362676733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/bavesitikunasuvuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9743/7848/files/beginner_ukulele_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4822/9271/files/tefaxadomaxabot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4642/8062/files/49768807693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2342/3912/files/xodijulikaruwoxapafonesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9113/0536/files/burp_suite_tutorial_download.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_off00005ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 5540 bytes
SHA-256: 318943a25a74b927151ecf2237b90569056ec1a3b2d55b76b4f43f5d68121437
font_01_sfnt_off000070e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E0 10828 bytes
SHA-256: 6ba1a7fee96e176f9346b9127a7c72ea0875021577bb1d904bb1f4ef9263138a

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