PDF malware analysis — malicious · ad2b402369fe0123

MALICIOUS

PDF

50.5 KB Created: 2020-10-18 14:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: a81d172b3881d41151b0153fed888987 SHA-1: eca133d266ded482dd842bd829a2b225384bfa4e SHA-256: ad2b402369fe01230d798fd4101762bc5edc8728b93a4af75a877f064f93ab6f

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://gettraff.ru/123?keyword=comment+redimensionner+un+pdf+sur+mac In PDF document text
- https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/9997097.pdfIn PDF document text
- https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/4543589.pdfIn PDF document text
- https://tumovapexawezan.weebly.com/uploads/1/3/1/3/131398362/kejuxumuxadu_ruxunewiw_majudige.pdfIn PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
- https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/95010c4d.pdfIn PDF document text
- https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/c693694562.pdfIn PDF document text
- https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/xexanoti.pdfIn PDF document text
- https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/3bc8cfc.pdfIn PDF document text
- http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
- http://www.typoland.com/In 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/1/0440/1712/3493/files/dudevuvimojedegukipavato.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5806/9655/files/multiplication_worksheets_for_grade_3_doc.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/8442/6663/files/word_letter_rearranger.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/5289/4874/files/kabonufuvama.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0478/1791/6575/files/windows_7_android_software_apk_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/2931/8813/files/black_and_decker_rice_cooker_directions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/9312/3753/files/alarma_dsc_pc1555rkz_manual_espaol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9469/5318/files/zixatebaxugeji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1255/2864/files/class_11_geography_book_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/7494/3676/files/post_op_heart_cath_instructions.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005f71.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F71	6168 bytes
SHA-256: `d841e6ee9fc5f8d88f1d94419f2a0f587508a927e8deb92e2b18ca34c352e48a`
`font_01_sfnt_off00006f10.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F10	5172 bytes
SHA-256: `41d4e5ebdf433884f2dd0be633c8e8e342296e91755ab82d5b68f8045afece60`
`font_02_sfnt_off00008088.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8088	11712 bytes
SHA-256: `b7e42e376b972392a0abe2cb73e587218b95d7957838d288e4ee1a16a5e021c2`
`font_03_sfnt_off0000a595.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA595	16116 bytes
SHA-256: `625fd8209397c4518634f7f31ccb9467f9cbb6e370bc4266e090730d377e787c`

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