PDF malware analysis — malicious · d3bd8dc9e9984fd4

MALICIOUS

PDF

95.4 KB Created: 2021-05-18 08:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 9436fa61a7beb5879f9388b828f97ed3 SHA-1: 15c31bd497fb8a9c73028af4eed86ad915d286e8 SHA-256: d3bd8dc9e9984fd4755845fdd90547db8985d9ce858d69df6f2f86d502a55297

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://resalured.ru/strik?utm_term=hollywood+movie+tamil+dubbed+1080p+hd+download PDF link annotation
- https://cdn-cms.f-static.net/uploads/4411922/normal_6057c84e0fd41.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412591/normal_6043662440a2d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448750/normal_5fd923eb5142e.pdfIn PDF document text
- https://sexanugujox.weebly.com/uploads/1/3/4/2/134266496/5843722.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392207/normal_605709ca17278.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366351/normal_5fcbdd69df8fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446761/normal_6060e6b72c5f9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485448/normal_5fdc60a9a4d6c.pdfIn PDF document text
- https://defelidiko.weebly.com/uploads/1/3/1/0/131070982/zolap.pdfIn PDF document text
- https://talesana.weebly.com/uploads/1/3/4/8/134878252/7733419.pdfIn PDF document text
- https://fowuxodujokuk.weebly.com/uploads/1/3/4/3/134310829/1741710.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://s3.amazonaws.com/zozofufulolig/the_hunger_games_catching_fire_full_movie_free_download.pdfIn PDF document text
- https://s3.amazonaws.com/fefurorobumi/surface_area_of_pyramids_and_prisms_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d9eb831a-6aae-4805-ba68-3a922e3b532f/80826657395.pdfIn PDF document text
- https://s3.amazonaws.com/bopuxosavubare/bezigiduf.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f29108b2-35b2-4478-baeb-b1fa6b581de8/37119185369.pdfIn PDF document text
- https://s3.amazonaws.com/sixenogafopoj/igloo_33_lb_ice_maker_reviews.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/368e0d3a-682b-4d2a-b554-567e6568c9d1/casio_g-shock_original_ga-100-1a1er.pdfIn PDF document text
- https://s3.amazonaws.com/guvovigo/fiwiraxajaniwuputukuxase.pdfIn PDF document text
- https://s3.amazonaws.com/gupojakami/acrylic_acid_market.pdfIn PDF document text
- https://s3.amazonaws.com/savifin/how_many_calories_are_in_a_subway_sugar_cookie.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/589110d9-375c-430b-b757-853f570d7f68/what_is_the_message_behind_the_national_anthem.pdfIn PDF document text
- https://s3.amazonaws.com/lejivugeleguwod/college_algebra_problems_with_solutions.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_off000129f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x129F1	5668 bytes
SHA-256: `51407e1b3d22028b348d8b06c3bac84600fcde7e4dddb29e7a19658e17e56304`
`font_01_sfnt_off00013d26.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13D26	2528 bytes
SHA-256: `5b1e59b7f493dead05534cacbcd25b1f7bce8514298c2bae48a0f579cd0dbb2b`
`font_02_sfnt_off000147c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x147C2	11724 bytes
SHA-256: `7dce50837e73fd42e42816a21cf37d476deafd5dc564da9eae68c36f1917167a`

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