PDF malware analysis — malicious · eca1f32c1ef87d23

MALICIOUS

PDF

273.3 KB Created: 2021-03-18 06:26:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 82ecd88a64dd673050ae251b884837b9 SHA-1: 980dd30593c0125f95c8105e191b0a231f80ad3b SHA-256: eca1f32c1ef87d238125611b07e6c464acd48b378653cf98ddfe9435b8ecbc2b

154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9750

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://yafferge.ru/123?utm_term=ayo+and+teo+dance+mask+off In PDF document text
- https://wuduzavuvavazi.weebly.com/uploads/1/3/4/6/134618101/verubajabu.pdfIn PDF document text
- https://zigikarorusoto.weebly.com/uploads/1/3/5/3/135351373/tasin-vegumeju-kuvug-kilawenikixiz.pdfIn PDF document text
- http://tigibisolefora.mygamesonline.org/33634647410.pdfIn PDF document text
- https://cdn.sqhk.co/vozogekom/hhlk1og/54464713392.pdfIn PDF document text
- http://keniworu.mywebcommunity.org/duxowemojetofejavavek.pdfIn PDF document text
- http://biniwitovo.mywebcommunity.org/characteristics_of_a_good_mathematics_teacher.pdfIn PDF document text
- http://kapovulup.mywebcommunity.org/cedula_rfc.pdfIn PDF document text
- https://cdn.sqhk.co/logubaxe/dhhF0ge/birdman_nba_player.pdfIn PDF document text
- http://lofoporubatul.mygamesonline.org/6378002545.pdfIn PDF document text
- http://xebiniseba.mygamesonline.org/how_to_write_a_statement_of_faith_example_baptist.pdfIn PDF document text
- http://jujovobima.getenjoyment.net/poser.pdfIn PDF document text
- https://cdn.sqhk.co/wagejino/qUKfjf9/46663816417.pdfIn PDF document text
- https://lixepugoguzezum.weebly.com/uploads/1/3/4/1/134132265/kosumeni.pdfIn PDF document text
- https://xokojitijuxup.weebly.com/uploads/1/3/4/3/134362284/8865235.pdfIn PDF document text
- http://terugate.mypressonline.com/2032467014.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_44857343457f47e6a9d2a5bac11d4543.pdf?index=trueIn PDF document text
- https://b81f28a7-a6cc-4df9-aebb-a76b708ee4b5.filesusr.com/ugd/df05b2_412b5cfc39f3496e8e9c4f5cae21f006.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/vofadoloves/57218143686.pdfIn PDF document text
- http://muvekalufisu.atwebpages.com/41000743325.pdfIn PDF document text
- https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_0eb2259700fb4c51af481ede32494b9f.pdf?index=trueIn PDF document text
- https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_fb49f1501cc440d9a79deca0533b137e.pdf?index=trueIn PDF document text
- https://b7eb3c74-9f10-4efd-a612-efb7ea03662f.filesusr.com/ugd/7198c1_08a3611793404fdfb8a9b507d1c27ef5.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/nezanurugega/autocad_lt_2009__crack.pdfIn PDF document text
- https://s3.amazonaws.com/xalexojaxipud/it_server_inventory_template.pdfIn PDF document text
- https://s3.amazonaws.com/kubafezin/39687903695.pdfIn PDF document text
- https://s3.amazonaws.com/wexukufedepim/reported_speech_questions_exercises_multiple_choice.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0001d933.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1D933	175652 bytes
SHA-256: `fea4c7f58b0cfbd8d6850e90c06d0124df143ea484bded5f5d2198892823d085`
`font_01_sfnt_off0003de40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3DE40	5196 bytes
SHA-256: `0cb7a34966f0327e0344f3d23392e7ecaaadf89d8a4a3407144f6e072181aa8a`
`font_02_sfnt_off0003eff4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3EFF4	12692 bytes
SHA-256: `14a47151460108badc3213c6e34440421c7ce19a6a7c69479c47a83894bda409`
`font_03_sfnt_off00041a8b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x41A8B	17980 bytes
SHA-256: `11e600cba799035ff3f5aa111872b88db6890a3239ba2af07b63b86ee33568ca`

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