PDF malware analysis — malicious · 9bce9a090661e4f5

MALICIOUS

PDF

50.3 KB Created: 2020-10-24 06:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: 6fb729fad05af0fa111fdd1eca50f465 SHA-1: e28c8cc967a19a0e5dc6e80b90a48467deecd962 SHA-256: 9bce9a090661e4f572b9e6ba932185c8069b35bba1177a8c9008fa372da8cadd

194 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.cc/123?keyword=affichage+obligatoire+pdf+gratuit In PDF document text
- https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/3592415.pdfIn PDF document text
- https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/begonumibase.pdfIn PDF document text
- https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/1668146.pdfIn PDF document text
- https://kudumegowejo.weebly.com/uploads/1/3/4/2/134266354/xatefatuzubele.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368781/normal_5f8959cee14f3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366653/normal_5f8f1805d06ff.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365660/normal_5f875b8a1dae1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384143/normal_5f8e435216ed0.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/jamokaroxoj/probability_density_function_problems_and_solutions.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/fimurukufuvujufalebor.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/razoronorux.pdfIn PDF document text
- https://s3.amazonaws.com/rokuwapesu/back_titration_questions.pdfIn PDF document text
- https://s3.amazonaws.com/vonuxagupeduze/venuwenopokejebepa.pdfIn PDF document text
- https://s3.amazonaws.com/nemafu/vokezorejirebivijetanegoz.pdfIn PDF document text
- https://s3.amazonaws.com/remeranexe/fukinexekaxilawigi.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/bepukodejukopagat.pdfIn PDF document text
- https://s3.amazonaws.com/pibabopuduj/70616585758.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0492/2484/3420/files/gitazasigatoragerosuju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/9456/7840/files/location_based_application_for_android.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/3068/4063/files/29409146534.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/8997/2385/files/55692964227.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007439.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7439	5144 bytes
SHA-256: `e05fbdf4575d1472da705cf282e100c1a1ed4f05b3599569e2625a32630d596f`
`font_01_sfnt_off000085c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85C4	11928 bytes
SHA-256: `fefd9dcbceea62c1333536670bd0030465756ed83a5d930b525eb4a4ff1d8db4`
`font_02_sfnt_off0000ab9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB9E	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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