PDF malware analysis — malicious · 9a13218823737c9f

MALICIOUS

PDF

49.9 KB Created: 2020-11-03 11:20:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: 561db016f8920a1d321f02de4b0d40be SHA-1: 3e0d039e802396ae61203219c57e02d64cf26a72 SHA-256: 9a13218823737c9f69072394144e0e7bac44e6fcceab5b04134e4a0ca53cc8a0

134 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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.me/123?keyword=bowling+for+columbine+questions+and+answers In PDF document text
- https://cdn-cms.f-static.net/uploads/4369671/normal_5f91513cdf6f5.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/d995d99f-c646-4b5b-b0dc-684f156b5f81/88810702848.pdfIn PDF document text
- https://s3.amazonaws.com/xebuvuwov/1446343820.pdfIn PDF document text
- https://s3.amazonaws.com/livivuvuwugeb/88268197426.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/65014e53-d327-4977-b905-aab350769fe8/xuladebojebi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3b7f5f46-d77d-4d66-b265-d84f04f75a8b/6359056095.pdfIn PDF document text
- https://s3.amazonaws.com/putelekireza/thomas_feeney_md_daly_city.pdfIn PDF document text
- https://s3.amazonaws.com/wewuxuviwar/mumijumenalaxowan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/605d759d-b8cd-4c43-ac8f-fd126c142c9f/34595689882.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/55915fb5-f03b-4ffa-a184-9a1455022820/pijasexatujosimasul.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/23f9fced-fcd5-4ce2-8d7d-2db027742295/sowerinane.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/33ae9815-8195-49e0-9481-95a6ef92ee24/woxagagefesifovitarivaf.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4a0e720b-9c83-4390-a213-bb13782b3471/23034177014.pdfIn PDF document text
- https://s3.amazonaws.com/napisakaluja/lomufukedogezutapogoris.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/845aef35-089e-4c04-ab6c-480eaf23e633/62055587195.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b82874b0-d84f-4948-9c03-9ed6d2e4324c/86149957149.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000819a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x819A	5748 bytes
SHA-256: `ce8630898276cea02eed305267e82ba07c055c91400586e1a6a808a87736d518`
`font_01_sfnt_off0000951e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x951E	10780 bytes
SHA-256: `f772fe30991a2cd5f391c2b7a878dc9129db8aa306ff55bf05b3d1f43e182ad8`

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