Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbaa41a12b379b3…

MALICIOUS

PDF

42.6 KB Created: 2020-08-21 13:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a7689948f038278279efca1c9429aef SHA-1: 2b9f93f02df8a387248af209476ca5fd651df72d SHA-256: 0cbaa41a12b379b362a8c0ff3d44ec0abd7f4a5cbf3d5b8790b6504905ff0ca0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to a redirector URL, which is part of a link farm designed for SEO manipulation, likely to distribute malware or phish for credentials. The document body, though heavily obfuscated, contains the redirector URL, suggesting an attempt to trick users into downloading or visiting a malicious site. The ML classifier strongly indicates maliciousness.

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=spider+solitaire+pc+game In PDF document text
    • http://girabef.societyofoldsalts.com/uploads/1/3/1/3/131380429/8728600.pdfIn PDF document text
    • http://files.wavelengthassociation.com/uploads/1/3/2/6/132682282/5426607.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/1/0430/2539/9971/files/ikea_swot_analysis_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1926/2357/files/42618859219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/lawolifotuvigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5789/files/54494729034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/78480586405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5583/9382/files/97427186684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5494/6721/files/nipinaxireveviwemazowase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5562/files/amazing_grace_paroles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/62861887027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7673/1558/files/avengers_endgame_theme_song_remix_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.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 2

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_off00006729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6729 5496 bytes
SHA-256: ba6ea0e33367a6c6535e020ad4dd34cc952bf30f90356a0fc184ba6c447c2a6c
font_01_sfnt_off000079b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B8 10476 bytes
SHA-256: 9ae31c821d9b244bdbda312d10914e85a02f10484933ebfafc07010e35682b85

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