Malicious PDF — malware analysis report

Static analysis result for SHA-256 b229ee780cdba23f…

MALICIOUS

PDF

74.0 KB Created: 2021-03-16 21:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0034b3b92e2ccf16292074ceca72918a SHA-1: dba86c2fe91e2ae56b8c471e36d18e37519969e2 SHA-256: b229ee780cdba23ff831ab9894056cab1cffcbdd1b760b78e74718a0fa568a11
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan delivery mechanism. It contains numerous external links, with one prominent URL, 'https://ponafet.ru/award?keyword=roman+catholic+bible+pdf+download', appearing to be an SEO redirector for phishing. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest it is designed to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ponafet.ru/award?keyword=roman+catholic+bible+pdf+download PDF link annotation
    • http://filanion.online/66062898762eebmn.pdfIn PDF document text
    • http://8bitbeardsco.com/18799406769i1ssb.pdfIn PDF document text
    • http://podarokinsta365.site/42904397595swrv6.pdfIn PDF document text
    • http://websecurer.tech/wesalebuwlqsa.pdfIn PDF document text
    • http://seamanygau.best/coleman_electric_furnace_blower_motorv7i2k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_56c366a681f543f282956ce8ac893d1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gulapore/grounding_techniques_for_anxiety_attacks.pdfIn PDF document text
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_2be14b53465845309f20c97169f9bc9b.pdf?index=trueIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_12bf7b6b2fdc495b93db16a6bd85e2da.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejobu/26741497041.pdfIn PDF document text
    • https://d321836a-1bf8-47c4-b4d3-67fe1e7f0250.filesusr.com/ugd/33ab24_f6a3f3cc4250458383d32dbf6e181eb6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/cercle_de_la_forme_raspail_horaires.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/20621126949.pdfIn PDF document text
    • https://0c241ebc-151b-48bf-a4db-a9f2ee65d67b.filesusr.com/ugd/c17081_e274a808e76d4d85a857d5270a291d74.pdf?index=trueIn PDF document text
    • https://98771922-91e4-4673-aa0d-7794f4435593.filesusr.com/ugd/b6aaa0_dd6085216bb64d7783d3582f28ebc21c.pdf?index=trueIn PDF document text
    • https://507f79ed-2408-4027-b124-45ed49bded7d.filesusr.com/ugd/2de61b_86103090546542b886a73524a6647ec8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/wiwojada.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/isanti_county_police_reports.pdfIn PDF document text
    • https://9ebe8999-295a-4f11-87dc-c96f3e1b46ff.filesusr.com/ugd/8de238_b09aa9c7c0244d40bae15e1417c8b3ae.pdf?index=trueIn PDF document text
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_9404b02cef334c089e7fe07672f7ce2d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fasudikek/76579071058.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/luguji.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17C 5360 bytes
SHA-256: f65a93e68d7a39ae579d0c86299b857ee0357799b01e62efdfc5baaff06513b6
font_01_sfnt_off0000e3a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A2 9864 bytes
SHA-256: a50703de388035a6fbd4919a153bb3facc5fc3cdaab2a7aa1494b708c934d5f9
font_02_sfnt_off000105a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A2 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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