PDF malware analysis — malicious · 780fa38b0acad150

MALICIOUS

PDF

72.0 KB Created: 2020-10-26 09:50:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: feb82d3600bbfc0c939ab9d53bf677dd SHA-1: d374ad319c4f05f25da4a628d49c8bd6b35b622e SHA-256: 780fa38b0acad150609a99ff990df16f9971e50d08d75eee6fb82df44794cd78

194 Risk Score

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.me/pify?keyword=%25D8%25AF%25D8%25A7%25D9%2586%25D9%2584%25D9%2588%25D8%25AF+%25D8%25B1%25D9%2585%25D8%25A7%25D9%2586+%25DA%25AF%25D9%2586%25D8%25A7%25D9%2587%25DA%25A9%25D8%25A7%25D8%25B1+pdf In PDF document text
- https://zupuxugemewizo.weebly.com/uploads/1/3/4/3/134309945/7172715.pdfIn PDF document text
- https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/7949030.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377379/normal_5f8bab91a3aa1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373522/normal_5f90c45611724.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369909/normal_5f89eed7834bd.pdfIn PDF document text
- https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/jonedelarij_mirula.pdfIn PDF document text
- https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/4328668.pdfIn PDF document text
- https://fubomagasikeka.weebly.com/uploads/1/3/4/4/134474343/15e211b5.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/2b9f1690-f184-4bd6-af39-a8d81b60e07a/wevigixuvilo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/225c212a-75be-43a4-a7e1-274b9b1b4d99/90333868337.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d1f036c8-fec4-4e80-89e8-b4127d5faf62/soxunusul.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3ae8f2a0-69ad-4368-bca2-ba07b315bcfb/66271121836.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3a7dcde9-cdb6-4eed-b9d4-c50420e39721/gapepepanofapotokajoba.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eb0ace3d-7e69-4752-a49a-0571a4ad349b/disanopewekir.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e72bbf3-45fa-4303-ae47-91459b88106f/twilight_render_for_sketchup_8_free_download_full_version.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bb6d3e4a-1023-453c-b3f8-254561b5babd/10414552597.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f1cc1188-cf43-481d-885c-2f72cca80d24/61367568830.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_006_off0000d771.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xD771	31780 bytes
SHA-256: `19b5f07e33a0e66657b49cebb9d0e563f76b317ef6b8b10e83e41ca9c13fca69`
`font_00_sfnt_off00009063.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9063	4424 bytes
SHA-256: `eb44c40e94dc5ca083dfad017687c0d64e596cd3429404efb3526a62130c469b`
`font_01_sfnt_off00009f89.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F89	17452 bytes
SHA-256: `70656ffbf97f78733872e35b3f0cd4e781640bd9169815a0bac6d11e7f1d892a`
`font_02_sfnt_off0000b993.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB993	8680 bytes
SHA-256: `89817027751d6deec3c0bb47870516accf8f8a520a362af52d22ff7b52d40f25`

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