PDF malware analysis — malicious · c8d044cfc396c5c7

MALICIOUS

PDF

40.9 KB Created: 2020-11-08 08:15:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11

MD5: 4a9a6234e0098589feacfe66281d9345 SHA-1: 51cb4eb45d47acb9ee4cc877a8a608955eb4019a SHA-256: c8d044cfc396c5c7d97e8d1ceb76aa39a19d0ad5dd2eedc3caa2c101cd100212

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=download+minecraft+1.5.2+launcher PDF link annotation
- https://cdn-cms.f-static.net/uploads/4365580/normal_5f87e991bade5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369657/normal_5fa055379f191.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/mubefula/bifugagomotejujimifu.pdfIn PDF document text
- https://zalidawu.files.wordpress.com/2020/11/sears_gamefisher_7.5_manual.pdfIn PDF document text
- https://s3.amazonaws.com/somamere/cancer_council_logo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83100214-21dd-467d-8d30-8788ffaa0bde/10074170588.pdfIn PDF document text
- https://s3.amazonaws.com/tibanepoxilibud/ibuprofen_nursing_considerations_davis.pdfIn PDF document text
- https://nupovuji.files.wordpress.com/2020/11/peter_norton_fighting_traffic.pdfIn PDF document text
- https://s3.amazonaws.com/vavapekadoliti/14491452888.pdfIn PDF document text
- https://s3.amazonaws.com/nezanurugega/reliability_centered_maintenance_implementation_made_simple.pdfIn PDF document text
- https://lananikor.files.wordpress.com/2020/11/bukenekizafinifikup.pdfIn PDF document text
- https://gelolote.files.wordpress.com/2020/11/26960002118.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_off0000622e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x622E	5512 bytes
SHA-256: `a6b13021a67927b4bf8d5570372514317683d16824a68cc9155a02329b0ad652`
`font_01_sfnt_off000074f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74F0	9900 bytes
SHA-256: `764792fcbabbc4291bd005a16c1dcac786c3086ab99131a19c8ff296d92bea8f`

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