PDF malware analysis — malicious · 6f10bc4f64ce7fd7

MALICIOUS

PDF

43.0 KB Created: 2020-11-07 09:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 788ab1fd773215eb4a77eb51f0f3782f SHA-1: 274a5addbea0f08ef3f3b26d087c5455f602f6b4 SHA-256: 6f10bc4f64ce7fd7beb710ae0cb2154b7e243bfcef9bd206d9f39dca811208a4

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://traffset.ru/aws?keyword=open+enrollment+2020+medicare+ends PDF link annotation
- https://cdn-cms.f-static.net/uploads/4380411/normal_5f931f168fbd4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382413/normal_5fa5c7e531d30.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/c18317ed-3cbf-4fb9-a3bb-b9426908dcd2/8226724880.pdfIn PDF document text
- https://s3.amazonaws.com/tajimipojimo/27844021279.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f704d059-fba8-43a2-a8f3-6f56dff2c0f1/canon_pixma_mg5550_instruction_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6d45be78-0da1-4921-abe9-3a1a39d4334e/53736686118.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7a46f4ab-2d48-426b-86d0-cf29c9c2a611/numapuxelanefuze.pdfIn PDF document text
- https://s3.amazonaws.com/xurixado/voyages_in_english_grade_4_textbook.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/22e5aec8-0e06-43d3-b3c6-6fd9843e12e4/16127657076.pdfIn PDF document text
- https://s3.amazonaws.com/wusigipufuvowix/tutu_helper_android_apk.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_off000068f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68F2	5520 bytes
SHA-256: `b7f7755e6dd1bb1183c9b321b45245c5c1d5d673cf4b76f2d748c9f9b1e6ff16`
`font_01_sfnt_off00007b93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B93	10560 bytes
SHA-256: `78e58fa04c4224c811366b81a8145811366329e45c814103d5b83ec1586a898b`

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