PDF malware analysis — malicious · d6d84484df9b60c2

MALICIOUS

PDF

96.7 KB Created: 2021-03-29 20:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 577ccdabb4097baf42ed69613b6ae34d SHA-1: dc508de97e19e91df3b5a2b95233cd95ef707b1b SHA-256: d6d84484df9b60c2cc32144120baa078b13b2befaaffe194f92ebe42fad42889

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which are obfuscated or lead to suspicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to a site that hosts malware or phishing content. No scripts were extracted, but the PDF structure itself is used to host and distribute these malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9972

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://dafemum.ru/wix?keyword=double+agent+iptv+apk
- https://dawawasokiju.weebly.com/uploads/1/3/1/4/131408838/552bc1cc1f21ef.pdf
- http://dexaputanit.mygamesonline.org/attribution_theory_in_education.pdf
- http://kevifiregerufug.scienceontheweb.net/american_english_file_3_teacher_s_book.pdf
- http://fobezevuwoki.iblogger.org/aphasie_motrice.pdf
- https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/bojalob.pdf
- http://zigapajuxijado.mywebcommunity.org/nagiwiloliguguwuvokixin.pdf
- https://mapevitesofik.weebly.com/uploads/1/3/1/6/131606073/b5d95415b85.pdf
- https://dunelakanova.weebly.com/uploads/1/3/1/4/131410870/zepevenej-fujijipadekase-sagubuvawu-xevizoxatajo.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://fd7a53fe-11c1-4e60-83ad-ac1bb997268f.filesusr.com/ugd/5cf23b_52a42a41d96341a282bdea23c111dc81.pdf?index=true
- https://uploads.strikinglycdn.com/files/9514bd18-a59b-4fcb-a2c3-813c2f438d61/venutiti.pdf
- https://7fe1f042-206b-4735-a408-f56337efeeb4.filesusr.com/ugd/d34b51_3f0e42e92afa4caa99950b479455df3c.pdf?index=true
- https://b2bd4247-5771-4f9a-9f3f-b46500bff287.filesusr.com/ugd/f41bfe_d7ce7f1bceb84bb3bb0324287b9300bf.pdf?index=true
- https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_2ef544553f9e40b29a9798de70823819.pdf?index=true
- http://bebovufuvuji.myartsonline.com/jayces_navy_interstellar.pdf
- https://625f08e2-3d8e-45b5-8e8c-b95d001c5c7c.filesusr.com/ugd/d94ae5_15f871d602c14c23a6bd34fc8f69c021.pdf?index=true
- https://uploads.strikinglycdn.com/files/f81c94c5-a6eb-47f4-bab3-cc6c5fcbd470/engineering_drawing_and_symbols.pdf
- https://uploads.strikinglycdn.com/files/a131fecb-6efc-4d14-b16d-5747f0f477ea/storyboard_that_app_for_ipad.pdf
- http://witesibezixu.epizy.com/steins_gate_0_endings_explained.pdf
- http://xofududegotu.epizy.com/boko_haram_insurgency.pdf
- https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_7caabae56d654df5ad67268670e23738.pdf?index=true
- https://fc060a1e-8c1d-4b7d-bafd-75f79d4c6355.filesusr.com/ugd/c0a468_798a07584d3a40709ca87d672e61e22a.pdf?index=true
- https://uploads.strikinglycdn.com/files/03765ef0-7321-4bc3-8244-7020b5bda813/how_to_fill_parent_declaration_form.pdf
- https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_fddfbc29f4d345dc96669a77e600ebed.pdf?index=true
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fb51.bin` `9cfe83bcc390732963a2656e350beec608dd7253cb575cb07ed99a3efdc78663`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB51	4860 bytes
`font_01_sfnt_off00010bf7.bin` `2991b08c51d219c1a5183eb77b3e2b8abaf5f73626ee9d5c34624a2cb318936a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BF7	6604 bytes
`font_02_sfnt_off00012371.bin` `0fdedc2022d045cd99b90caf62df52e46fce1aee6c78b449c7d8a83ab556b654`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12371	11084 bytes
`font_03_sfnt_off00014958.bin` `abd7d7f9d0bfaf35e0446f0916be9ec965ca2fec4595fb9cc188e6f5b83d2946`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14958	16272 bytes
`font_04_sfnt_off00015ef3.bin` `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15EF3	4324 bytes
`font_05_sfnt_off00016ca6.bin` `74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16CA6	1736 bytes

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