PDF malware analysis — malicious · cf92adc38a0de140

MALICIOUS

PDF

43.5 KB Created: 2020-10-11 02:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: a1550bbe11d5eb28185f1e0291b1daa1 SHA-1: eb70669dd7028a78e5943ef4e17164d09be94bc4 SHA-256: cf92adc38a0de140c7f041c395dfa1911895c137cb758ed125db9de8ae8f7585

134 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

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.
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://cctraff.ru/strik?keyword=victoria+2+file+exception+622 In PDF document text
- http://files.lebanonprayergroup.org/uploads/1/3/2/7/132710569/4928585.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/21c458c2-5735-425c-b4d4-196cc42e79ca/84957841901.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3f4a75f9-2117-4d3b-9d81-6aef50782925/46373332960.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/041ded37-4fc9-42bf-8fdd-8a9ea9857d82/88179072397.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/6136/4904/files/28385714085.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9612/9192/files/dosesolalipalajagiwogat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8506/9478/files/96771540011.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/6880/0155/files/88629698019.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_off00006cc7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6CC7	5148 bytes
SHA-256: `9814159462767d27e14c95ed567bedbceb47ebac37505bf031f9f84889d44971`
`font_01_sfnt_off00007e64.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E64	10316 bytes
SHA-256: `27acbe5c2f897727228f20f676595100fe054fe441adb429ef20c8586061ca3b`

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