PDF malware analysis — malicious · ab844bbce5aa2968

MALICIOUS

PDF

53.7 KB Created: 2020-11-08 05:12:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11

MD5: 72104c45610e5c762c2c41905c20c880 SHA-1: fb15c8d1860eb6b90f4b542ea8cd4056ad0a7f59 SHA-256: ab844bbce5aa2968ea4b6a1c790e56ddde806de5e8cdfb6554664a15477bbd71

76 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://trafficel.ru/aws?keyword=tenko+shimura+height PDF link annotation
- https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/niredunoz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369773/normal_5f978619b64ce.pdfIn PDF document text
- https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/89d96.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/c24bd604-ed08-455a-883d-47dddc36fb0b/84624615835.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/68cb2f5d-e5d1-4fb2-8745-b63256333652/mademaxomiso.pdfIn PDF document text
- https://lajapadawosi.files.wordpress.com/2020/11/cheats_for_fun_hospital.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/21fbb13e-397d-4ef2-b25a-ed7aecb46a1e/66266584694.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4caf79f1-6ad7-43f8-bde0-317fb4275e4e/doom_4_classic_maps.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7564842b-3aee-42e2-bb04-bde875cd7796/zewedum.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f77c7a58-c1bb-41a6-b533-5875b5b299a6/likabuwasu.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_off000091a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91A7	5080 bytes
SHA-256: `05f5d16f7c5919e438f8aef83ee1abb1904ceffb4a0c99b2bc61eaa5f6090b49`
`font_01_sfnt_off0000a2bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA2BF	11540 bytes
SHA-256: `0cb489b04a74a440eb2c484ada414a10e0abc3836bc597fb25fb7e872b999a57`

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