PDF malware analysis — malicious · c92871b8a95212c3

MALICIOUS

PDF

47.9 KB Created: 2020-10-21 00:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: 2a4629ebb33313fbfe3f5cac6ca449f7 SHA-1: 73242b094882ebfc3628d6c12971bac5507acde4 SHA-256: c92871b8a95212c33d858d0832a497d2ab66615ae00202b28a1ab4bc55b4c447

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/123?keyword=strategic+leadership+and+decision+making+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4366359/normal_5f8a932ec6d80.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369525/normal_5f8f5166a1ed4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366965/normal_5f8732f8d9135.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372963/normal_5f8a97c7c421c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383165/normal_5f8bd8a24ba3d.pdfIn PDF document text
- https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/tafojarike.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/40ddfa4d7f4e3e.pdfIn PDF document text
- https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/lileresajelo-tesidonumove.pdfIn PDF document text
- https://zusaneji.weebly.com/uploads/1/3/0/8/130813769/didipiwujiwudap.pdfIn PDF document text
- https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/polibisupokave.pdfIn PDF document text
- https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
- https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/8957986.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367947/normal_5f8f521100904.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382194/normal_5f8b49ad4eace.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379973/normal_5f8c286e25e71.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365998/normal_5f8755becb0cc.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0433/2892/9945/files/dd_attack_bonus_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/7061/8298/files/telusonutamutes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/3008/8342/files/49855408751.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/6424/8470/files/26737579491.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/6281/5651/files/46852417794.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/cours_sur_l_apiculture.pdfIn PDF document text
- https://s3.amazonaws.com/memul/89553938925.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/rustoleum_cabinet_transformations_instructions.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/malukivumifuk.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006e69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E69	5524 bytes
SHA-256: `1130635324eea9ab152e9f1afd72cd62c6925a77516d69ac864da9c89b559483`
`font_01_sfnt_off000080ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80EC	10124 bytes
SHA-256: `97c0b923ae475ddf7ddc609e4b448c6e28fdb99e65df4a89f9c91ccac1128cd7`
`font_02_sfnt_off0000a38f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA38F	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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