PDF malware analysis — malicious · 830f2fd76b0bcdce

MALICIOUS

PDF

97.4 KB Created: 2020-12-21 20:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 116827f7b4426c901c0302b37ce35944 SHA-1: 57b95110e6cd49465ac75780284cbc41c3f33e66 SHA-256: 830f2fd76b0bcdce8684969fee728ce9b95b40056e51a1a4cf13b16d96ef1a66

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, identified as a link farm, with one prominent URL leading to a site that appears to be a search result. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of external links suggest an attempt to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9959

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://trafffi.ru/strik?utm_term=heartstrings+meaning+in+malayalam
- https://cdn-cms.f-static.net/uploads/4501042/normal_5fb5f3aa49ee7.pdf
- https://vokevifiv.weebly.com/uploads/1/3/4/6/134657891/xepewuxuzerujig.pdf
- https://static.s123-cdn-static.com/uploads/4379970/normal_5fdf3b9c1e80d.pdf
- https://wanezevidika.weebly.com/uploads/1/3/4/5/134588498/xapekujapiteno.pdf
- https://xexiwimelogodit.weebly.com/uploads/1/3/4/5/134593193/gizosebotefiterit.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://fedorahosted.org/lohit
- http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
- http://smc.org.inhttp://smc.org.in
- https://uploads.strikinglycdn.com/files/60a3caa8-8acc-4bec-9087-ae7eeb540161/xoketigulotuvoga.pdf
- https://uploads.strikinglycdn.com/files/e3fd1217-f34f-4334-abac-891bd67a9622/filelinamidawos.pdf
- https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5c5ef8cdb769c6da48bb/1606376543269/roland_barthes_camera_lucida_trke.pdf
- https://uploads.strikinglycdn.com/files/d0a8ad63-8478-4774-bc43-7760f495084c/13710912864.pdf
- https://static1.squarespace.com/static/5fc528f2abaecd33183df1a5/t/5fc6f127a907d7439ccd1632/1606873383822/leatherman_multi_tool_knife.pdf
- https://static1.squarespace.com/static/5fc54e01085bf90c0e1a4b0c/t/5fca46ce414f5e3523868953/1607091938146/16580074360.pdf
- https://static1.squarespace.com/static/5fc55163d49dd124475193a8/t/5fcdcfeb05ddc9599d431e7a/1607323628556/elfster_secret_santa_shareable_wishlist_app_store.pdf
- https://uploads.strikinglycdn.com/files/73af4439-7c8d-41b8-ae2f-f8ec2d38c69a/32227293616.pdf
- https://static1.squarespace.com/static/5fc0da75085bf90c0efcd65a/t/5fc357b3a97599144e629505/1606637492002/dragon_ball_z_games_unblocked_76.pdf
- https://static1.squarespace.com/static/5fdd37006394b41d6424d862/t/5fde69475809ae3434fae880/1608411464634/65144759434.pdf
- 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://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
- http://scripts.sil.org/OFL
- https://gitlab.com/smc/meera/blob/master/COPYING

Extracted artifacts 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_010_off00015970.bin` `639f533dc3d59dab8f31e5d570f067b22abb569f411b42e7fafda2910e46530e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x15970	17552 bytes
`font_00_sfnt_off0000c733.bin` `2599871317e27d8d02e9dd8b6a4cf193a6c2551b6111d1c1b58b2c2c6c64eb87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC733	3544 bytes
`font_01_sfnt_off0000d3e9.bin` `29343c394cd2be63d5b2605e020233290c335fc988e5c18ceaab9fdbf599d23f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3E9	5068 bytes
`font_02_sfnt_off0000e515.bin` `dbaab8dcf32bfe64cb008f34eb54f5316f62236e8dffe3de49b44225404383a5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE515	2656 bytes
`font_03_sfnt_off0000f012.bin` `12939d4d091da47a70d755e4e391669bade756e900abf4a3120506aea3309e7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF012	12192 bytes
`font_04_sfnt_off000117c3.bin` `864cbe2c6973b44d2b71e19ffbffb2328dcb3759b07ceb43c11d5a372fc4956d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117C3	2328 bytes
`font_05_sfnt_off00012279.bin` `d117309382da938f7dffedc42f90dd4217b4d540d75629b80669d975ecbc171e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12279	2108 bytes
`font_06_sfnt_off00012c4f.bin` `2ea751e5d542f02fa4141a0932d8da91f5d5cdd41bd6d4746499e5e47228c1da`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12C4F	15060 bytes

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