PDF malware analysis — malicious · 878f49dd5f3a3c52

MALICIOUS

PDF

56.0 KB Created: 2020-10-20 18:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: 1c0c26fe73dde99951478f2552ce7771 SHA-1: 7d0b42a52f88851e94a4f867f878543b715daf79 SHA-256: 878f49dd5f3a3c52f6c029abe76ccbb6d37df7543411c4691362563098e4c83b

134 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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://ttraff.me/123?keyword=p4g+jester+social+link+guide In PDF document text
- https://cdn-cms.f-static.net/uploads/4366313/normal_5f887d96751b8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368221/normal_5f8803ba66a79.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/subud/96293854935.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/lofugoruxafi.pdfIn PDF document text
- https://s3.amazonaws.com/leguvefu/71218731151.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/veredimi.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/35781925557.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/75e72dff-3fc4-4b69-9806-3f70b29d85ef/85894005805.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0dcece9e-fc87-407c-aa2a-54ceb4e6e794/96981249816.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aabb5910-9660-4174-9018-f82af29f554e/mebomu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/82cf7638-a9c5-439f-a8de-157502e7e571/linemirid.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6d2e3da3-5e83-4f91-8e02-9d824a88e5fe/44366709820.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3071/5295/files/new_york_medicaid_income_guidelines_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0478/0651/3311/files/gurus_of_glass_gold_coast.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/9571/0624/files/soninodatenuweguwulowoku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/0952/2845/files/revenge_of_meta_knight_characters.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3826/8318/files/play_store_download_apk_for_jio_phone.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/pakunotobozilemu.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/41845648323.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_off00009d61.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D61	5336 bytes
SHA-256: `b4b513696f25fb6c436be2bbfe611c5cee11ddd5ede3476890b64b9370fdd1f4`
`font_01_sfnt_off0000af9d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF9D	10324 bytes
SHA-256: `f80f1766087e042212ab1c007f5f6e84beb827c9119676513dffcc39a71592a4`

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