PDF malware analysis — malicious · 3484ab0a8decced6

MALICIOUS

PDF

78.2 KB Created: 2021-05-31 13:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13

MD5: f34b9c0b52ae7dc4127cb4fd21d1a7c2 SHA-1: e272c5e78913f69c5eaed5b4fee8defed670b961 SHA-256: 3484ab0a8decced68cffd2dc810fb550f9d3098cfc601b31c1fde6727baf0940

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure related to 'New android mobile games 2019' and includes an external URI pointing to a redirector. This indicates a phishing attempt, likely to trick users into downloading malware or providing sensitive information. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://botokaw.ru/123?utm_term=new+android+mobile+games+2019 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4380383/normal_5fda16edc8ec6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4428033/normal_6035f408cfba8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488815/normal_605451eb57779.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4390661/normal_5ff8cc4583ddb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403262/normal_6053ea92084d2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4463538/normal_60120a299db9b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371258/normal_60585203412fd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4494149/normal_5ffd019ed83f8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479942/normal_60125292e2880.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389353/normal_606961eb6a6cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393190/normal_606797ad6f64a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451356/normal_606890b1c37d2.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481155/normal_5fc9a09bf10ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418191/normal_603bddb1ab4e0.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://uploads.strikinglycdn.com/files/d8153cc1-e0cc-4451-82a6-53bb017687e4/niwasaker.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/79577953-a68d-4487-8f1e-bd55354e636f/lemafadanugu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c006f978-6dc8-4216-8f4c-96f5bbc05484/what_is_the_best_free_weight_loss_app_2020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d7c9251c-af11-4df8-8e20-453c6c9e2ac5/journey_to_the_west_3_full_movie_in_hindi_download_filmyzilla.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e800176-5955-4871-9d5c-7cff6839f3cc/best_buy_geek_squad_protection_laptop.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/71803887-34a0-46bf-9b04-51d376d71f6e/dijevirogabogamezuluboja.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3d2e6de6-b2c5-46db-a64d-d0a0fa459574/90242382476.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/08dbca2c-4f06-44cb-8069-c10cf03e2487/sanewisofor.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_off0000e7ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7AE	5536 bytes
SHA-256: `b2c5c45b47cbf9089097a2c88f0ae843e2353c97987c88304d96491defddaaa0`
`font_01_sfnt_off0000fa6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA6B	10128 bytes
SHA-256: `964534908a8afbea77dbad4cc93b52aeb4ea99d39b8e44a90c696584ab3ef61c`
`font_02_sfnt_off00011d22.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D22	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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