Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3379d242feed8d0…

MALICIOUS

PDF

52.9 KB Created: 2020-09-16 18:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b183d9499f1ee3a0ad25d5a63b0bca1 SHA-1: e1be31d74b1ecfa452410abccdf988f4c34aa668 SHA-256: e3379d242feed8d0a49bdfa0589de0bf76826d43cdd5e07331cf6b6e08e9a93b
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a link farm heuristic further indicates an attempt to distribute malicious content through numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.club/wix?keyword=prince+of+peace+baptist+church+chicago+il In PDF document text
    • http://bakasinu.michaelhadjimichael.com/uploads/1/3/0/7/130738531/4692345.pdfIn PDF document text
    • http://lezefas.primecomps.com/uploads/1/3/0/7/130738714/3370120.pdfIn PDF document text
    • http://manabuje.transformineducation.org/uploads/1/3/0/8/130874299/5040093.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/1/0434/7851/5864/files/ravelawenovamivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/sosebegapevulusix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2894/files/lazemalo.pdfIn PDF document text
    • https://fe9376ad-ae9f-47f6-a1d4-e7eb3a72cb48.filesusr.com/ugd/4329d7_9e8048efc06042c1b2e4ab6c9903867c.pdf?index=trueIn PDF document text
    • https://4ce37a5e-e115-4337-b43f-6ddcac4a9550.filesusr.com/ugd/031dda_1762b5d3af1341cca8be52fe5eb4e985.pdf?index=trueIn PDF document text
    • https://59f384c5-0c55-447e-a1e7-34949345cdb6.filesusr.com/ugd/3ed902_9de49b7905c044c7b1f96be166446500.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4281/1289/files/honey_bun_cake_with_cream_cheese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/24951126920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7183/files/3989710852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3151/files/14424602230.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA2 6476 bytes
SHA-256: 90fde11a3f0037fc907ae8b61c813580ea22ef209ebde2636d9354b201d9be1f
font_01_sfnt_off00006ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA9 5420 bytes
SHA-256: ec68be90fc03ea528f4a25ee6fa50734fa594b34c10c12d8d061d21ae574667e
font_02_sfnt_off00007e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E08 5364 bytes
SHA-256: 38ee7023fbe8e769b16ae379caae6baccf0062aaaf67857c8eb24571311f8d72
font_03_sfnt_off00008d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D61 10036 bytes
SHA-256: e7c8824f902a67444b8a0db7672087485749dd50f3c5ede1f01953bf178f9124
font_04_sfnt_off0000b009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB009 16168 bytes
SHA-256: bf950c4e7133ce77fdef2df0205da95a07fbf1ab4917480175e64671a73767ee