Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb1755d177a7ca8…

MALICIOUS

PDF

40.6 KB Created: 2020-08-06 11:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c8edfe9a9fcb1470128cf47263b8b16 SHA-1: afb87dfde11b756b9a429800f8cc7dda354ad4a3 SHA-256: 3cb1755d177a7ca88fb1c78101e26e1f07e244e8e185ee45fa348512e0d4f01a
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=cardiopatia+congenita+neonatal+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a link farm or redirection scheme. The primary attack pattern involves luring the user to click the malicious link, likely leading to further compromise.

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.com/pify?keyword=cardiopatia+congenita+neonatal+pdf In PDF document text
    • http://files.kavachikavachi.com/uploads/1/3/0/7/130740130/nadewupo_tabisanadejugal_tukuxov_kapagakugisez.pdfIn PDF document text
    • http://files.silverrescue.org/uploads/1/3/1/3/131398334/likiremegemop.pdfIn PDF document text
    • http://files.mojoecafe.net/uploads/1/3/1/8/131872273/d6040ac4dcf2.pdfIn PDF document text
    • http://files.trinityjamestown.com/uploads/1/3/2/6/132681602/375267.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/dubisetebezurazoxodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/zunosigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3521/3467/files/64652541813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1672/4386/files/netuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/72450789096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/tasogaxebafumijipoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/wutuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/22552987853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/bevakebuguzeparijumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/29918298600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/breeding_rabbits.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_off00006268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6268 5048 bytes
SHA-256: 6a0919d5d24501835fafc8839f2d54a73157981d4958a481e54579c52d1aff7d
font_01_sfnt_off000073a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A6 9904 bytes
SHA-256: 5ffdc57c4aa5e0a81548adfe9be6577644c127f35bd0ddd1eb4b98fc6903378b

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